RHSA-2026:96282
Vulnerability from csaf_redhat - Published: 2026-11-11 01:47 - Updated: 2026-11-12 06:05A flaw was found in OpenSSL's Cryptographic Message Services (CMS) AuthEnvelopedData processing. An on-path attacker can exploit insufficient input validation on cipher and tag length fields by sending specially crafted CMS messages. This can lead to the forging of messages or bypassing integrity validation. Consequently, an attacker may achieve key-equivalent functionality for a given CMS recipient.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0 | — |
Vendor Fix
fix
Workaround
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| Unresolved product id: 9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0 | — |
Vendor Fix
fix
Workaround
|
A flaw was found in the Linux kernel's netfilter component, specifically within the `nft_set_pipapo_avx2` AVX2 matching functions. This vulnerability occurs when a `pipapo` set with an 'ipv4 . port' key is reloaded. Due to incorrect masking, the system may erroneously identify non-matching elements as duplicates, leading to data integrity issues and unexpected behavior. A remote attacker could potentially exploit this to cause a denial of service or impact data integrity.
A flaw was found in OpenSSL. Applications that use the AES-OCB encryption method with a specific one-shot interface (EVP_Cipher()) will have their provided Initialization Vector (IV) silently discarded. This leads to the same internal cryptographic value being used repeatedly, which compromises the confidentiality of encrypted data. Additionally, this issue allows for the universal forgery of authentication tags, undermining the integrity of communications.
A flaw was found in OpenSSH. The `sftp` client, when used to download files from a malicious server with the 'sftp server:/path .' command, does not properly restrict where those files are saved. This allows an attacker to control the download location, potentially overwriting existing files or placing malicious files in sensitive directories on the client system, which could compromise system integrity.
A flaw was found in `sshd`, the OpenSSH server daemon. When `DisableForwarding=yes` is configured to prevent network traffic forwarding, it incorrectly fails to take precedence over `PermitTunnel=yes`. This allows a remote attacker to bypass intended security restrictions and establish a tunnel, potentially leading to unauthorized network access or circumvention of security policies, even when forwarding is explicitly disabled.
A flaw was found in OpenSSH. A remote attacker could exploit a use-after-free vulnerability on the client side when a server changes its host key during a key re-exchange. This could lead to high impact on confidentiality and integrity, and low impact on availability.
A flaw was found in the Stream Control Transmission Protocol (SCTP) implementation within the Linux kernel. A remote attacker could send a specially crafted sequence of ASCONF (Add IP Address Configuration) chunks, including DEL-IP (Delete IP Address) parameters, to trigger a use-after-free condition. This memory corruption could lead to a system crash, resulting in a denial of service, and potentially allow for arbitrary code execution.
A flaw was found in the Linux kernel's PPPoE (Point-to-Point Protocol over Ethernet) implementation. This vulnerability occurs because a pointer to network packet data is not updated after memory is reallocated, leading to the use of an outdated memory address. An attacker with local access could potentially trigger this condition, causing memory corruption. This could result in a system crash (denial of service) or other unpredictable system behavior.
A flaw was found in the Linux kernel's IPv6 networking stack. A use-after-free vulnerability exists in the `ip6_finish_output2()` function, where a cached pointer to the IPv6 destination address can become stale after memory reallocation. An attacker could potentially exploit this to leak sensitive kernel data, misdirect network traffic, or cause a system crash (Denial of Service).
A flaw was found in the Linux kernel's RDMA/rxe component. A local user could exploit a memory corruption vulnerability in the `free_rd_atomic_resources()` function by updating the `max_dest_rd_atomic` value before the old array is properly freed, leading to an out-of-bounds write. This issue can cause a system crash, resulting in a denial of service (DoS).
A flaw was found in the Linux kernel's Remote Direct Memory Access (RDMA) subsystem, specifically within the rxe component. A local, unprivileged user could exploit a race condition during a queue pair modification operation. This could lead to a use-after-free vulnerability, allowing the attacker to cause a system crash and resulting in a Denial of Service (DoS).
A flaw was found in PCRE2. An out-of-bounds write vulnerability exists in the `pcre2_dfa_match` function due to improper size checking when reusing cached workspace blocks. A remote attacker could exploit this by providing a specially crafted regular expression or a recursive pattern in conjunction with a small heap limit. This could lead to data corruption or potentially arbitrary code execution, compromising the integrity and availability of the system.
A flaw was found in PCRE2, a library for processing regular expressions. The `pcre2_jit_match` function, which handles just-in-time (JIT) compilation for regular expressions, incorrectly manages memory when processing certain inputs. This memory corruption vulnerability could allow a local attacker to cause the application to crash, leading to a denial of service, or potentially execute unauthorized code.
A flaw was found in the Linux kernel's IPv4 networking subsystem. A race condition occurs during concurrent processing of retransmitted Transmission Control Protocol (TCP) connection requests or socket migrations, allowing socket options to be freed while still in use. A remote attacker could exploit this vulnerability by sending specially timed network requests, triggering a use-after-free condition. This could results in system crash leading to a Denial of Service (DoS), memory corruption, or remote code execution.
A flaw was found in the Linux kernel. A local attacker or untrusted guest virtual machine can exploit this vulnerability by transmitting network packets containing malformed checksum metadata into the IPv4 networking subsystem. This failure to validate checksum metadata can corrupt memory during packet handling, potentially leading to arbitrary code execution on the host, a system crash resulting in Denial of Service (DoS), or information disclosure of sensitive memory.
A flaw was found in pcre2. When an application processes attacker-controlled regular expressions using certain Just-In-Time (JIT) compiler interfaces, an out-of-bounds write with arbitrary data can occur. An attacker could exploit this vulnerability to achieve arbitrary code execution, corrupt memory, or cause a denial of service (DoS).
A flaw was found in the Google Brotli decoder. An out-of-bounds write in the block-type switch handling in c/dec/decode.c can be triggered by a crafted Brotli-compressed stream. When an application decompresses untrusted Brotli data, this can lead to memory disclosure, denial of service, or potentially arbitrary code execution.
The system certificate authority (CA) store in Red Hat products, distributed via ca-certificates RPM packages, included multiple root CA certificates of authorities, which signed intermediate CA certificates with weak private keys issued by the eMudhra certificate authority. A man-in-the-middle attacker could use this flaw to issue certificates for arbitrary host names signed by the weak intermediate CA certificates, which would be considered trusted by a TLS/SSL client using system CA store and cause such clients to connect to malicious sites. Due to inability to only distrust specific intermediate certificates in all clients using the system CA store, root CA certificates of authorities that signed weak intermediate CA certificates are being removed.
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"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
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"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
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}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "openssl: CMS AuthEnvelopedData Processing May Accept Forged Messages"
},
{
"cve": "CVE-2026-43114",
"cwe": {
"id": "CWE-480",
"name": "Use of Incorrect Operator"
},
"discovery_date": "2026-05-06T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2466994"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the Linux kernel\u0027s netfilter component, specifically within the `nft_set_pipapo_avx2` AVX2 matching functions. This vulnerability occurs when a `pipapo` set with an \u0027ipv4 . port\u0027 key is reloaded. Due to incorrect masking, the system may erroneously identify non-matching elements as duplicates, leading to data integrity issues and unexpected behavior. A remote attacker could potentially exploit this to cause a denial of service or impact data integrity.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: netfilter: nft_set_pipapo_avx2: don\u0027t return non-matching entry on expiry",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This is an Important flaw in the Linux kernel\u0027s netfilter component, specifically within the `nft_set_pipapo_avx2` functionality. Incorrect processing during AVX2 matching operations can lead to misidentification of network data entries, potentially causing unexpected network filtering behavior and data integrity problems. This issue primarily impacts Red Hat Enterprise Linux 9 and 10 systems configured to utilize AVX2 instructions for netfilter set processing.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-43114"
},
{
"category": "external",
"summary": "RHBZ#2466994",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2466994"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-43114",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-43114"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-43114",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43114"
},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2026050626-CVE-2026-43114-5deb@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2026050626-CVE-2026-43114-5deb@gregkh/T"
}
],
"release_date": "2026-05-06T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-11-11T01:47:16+00:00",
"details": "For OpenShift Container Platform 4.17 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n (For x86_64 architecture)\n The image digest is sha256:0be445d72f89f8141dd06ea65022e4c5c55bb62e540b197ee2206d5873242f51\n\n (For s390x architecture)\n The image digest is sha256:76baeb5c514cded4b1de03a9720f072d7cb7193a53281cc3b13f0ff368e302c2\n\n (For ppc64le architecture)\n The image digest is sha256:0bc58e2a8b27d8618160594e249d135768b9f257f79e711688f46b457af4c816\n\n (For aarch64 architecture)\n The image digest is sha256:3ac6c84af6eabdcb162237f7b8ad058bfd12f4458fc654263f927c945af77ac5\n\nAll OpenShift Container Platform 4.17 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html-single/updating_clusters/index#updating-cluster-cli.",
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"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:96282"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
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}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
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}
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"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "kernel: netfilter: nft_set_pipapo_avx2: don\u0027t return non-matching entry on expiry"
},
{
"cve": "CVE-2026-45445",
"cwe": {
"id": "CWE-1204",
"name": "Generation of Weak Initialization Vector (IV)"
},
"discovery_date": "2026-05-27T14:17:46+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2481896"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in OpenSSL. Applications that use the AES-OCB encryption method with a specific one-shot interface (EVP_Cipher()) will have their provided Initialization Vector (IV) silently discarded. This leads to the same internal cryptographic value being used repeatedly, which compromises the confidentiality of encrypted data. Additionally, this issue allows for the universal forgery of authentication tags, undermining the integrity of communications.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "openssl: AES-OCB IV Ignored on EVP_Cipher() Path",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This is a Moderate severity flaw where applications utilizing the AES-OCB cipher through OpenSSL\u0027s EVP_Cipher() one-shot interface may silently discard the provided initialization vector (IV). This leads to nonce reuse, compromising confidentiality and enabling universal forgery of authentication tags. Red Hat products are primarily affected if they include or rely on third-party applications that specifically employ this less common and discouraged API usage with AES-OCB, as standard OpenSSL SSL/TLS implementations and applications using the recommended streaming AEAD API are not impacted.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
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},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-45445"
},
{
"category": "external",
"summary": "RHBZ#2481896",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2481896"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-45445",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-45445"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-45445",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45445"
}
],
"release_date": "2026-06-09T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-11-11T01:47:16+00:00",
"details": "For OpenShift Container Platform 4.17 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n (For x86_64 architecture)\n The image digest is sha256:0be445d72f89f8141dd06ea65022e4c5c55bb62e540b197ee2206d5873242f51\n\n (For s390x architecture)\n The image digest is sha256:76baeb5c514cded4b1de03a9720f072d7cb7193a53281cc3b13f0ff368e302c2\n\n (For ppc64le architecture)\n The image digest is sha256:0bc58e2a8b27d8618160594e249d135768b9f257f79e711688f46b457af4c816\n\n (For aarch64 architecture)\n The image digest is sha256:3ac6c84af6eabdcb162237f7b8ad058bfd12f4458fc654263f927c945af77ac5\n\nAll OpenShift Container Platform 4.17 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html-single/updating_clusters/index#updating-cluster-cli.",
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"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:96282"
},
{
"category": "workaround",
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}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 9.1,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"products": [
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"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
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}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "openssl: AES-OCB IV Ignored on EVP_Cipher() Path"
},
{
"cve": "CVE-2026-59995",
"cwe": {
"id": "CWE-22",
"name": "Improper Limitation of a Pathname to a Restricted Directory"
},
"discovery_date": "2026-07-08T01:01:01.518880+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2497927"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in OpenSSH. The `sftp` client, when used to download files from a malicious server with the \u0027sftp server:/path .\u0027 command, does not properly restrict where those files are saved. This allows an attacker to control the download location, potentially overwriting existing files or placing malicious files in sensitive directories on the client system, which could compromise system integrity.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "openssh: OpenSSH: sftp client allows attacker to control downloaded file location",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
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},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-59995"
},
{
"category": "external",
"summary": "RHBZ#2497927",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2497927"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-59995",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-59995"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-59995",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59995"
},
{
"category": "external",
"summary": "https://marc.info/?l=openssh-unix-dev\u0026m=178333966933090\u0026w=2",
"url": "https://marc.info/?l=openssh-unix-dev\u0026m=178333966933090\u0026w=2"
},
{
"category": "external",
"summary": "https://www.openssh.org/releasenotes.html#10.4p1",
"url": "https://www.openssh.org/releasenotes.html#10.4p1"
},
{
"category": "external",
"summary": "https://www.openwall.com/lists/oss-security/2026/07/06/5",
"url": "https://www.openwall.com/lists/oss-security/2026/07/06/5"
}
],
"release_date": "2026-07-08T00:04:49.995000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-11-11T01:47:16+00:00",
"details": "For OpenShift Container Platform 4.17 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n (For x86_64 architecture)\n The image digest is sha256:0be445d72f89f8141dd06ea65022e4c5c55bb62e540b197ee2206d5873242f51\n\n (For s390x architecture)\n The image digest is sha256:76baeb5c514cded4b1de03a9720f072d7cb7193a53281cc3b13f0ff368e302c2\n\n (For ppc64le architecture)\n The image digest is sha256:0bc58e2a8b27d8618160594e249d135768b9f257f79e711688f46b457af4c816\n\n (For aarch64 architecture)\n The image digest is sha256:3ac6c84af6eabdcb162237f7b8ad058bfd12f4458fc654263f927c945af77ac5\n\nAll OpenShift Container Platform 4.17 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html-single/updating_clusters/index#updating-cluster-cli.",
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],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:96282"
},
{
"category": "workaround",
"details": "To mitigate this issue, avoid using the `sftp server:/path .` command when connecting to untrusted or potentially malicious SFTP servers. Exercise caution and verify the authenticity of SFTP servers before initiating file transfers, especially when using commands that implicitly define the download destination, and also avoid running SFTP sessions with elevated privileges (such as root).",
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"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L",
"version": "3.1"
},
"products": [
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"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "openssh: OpenSSH: sftp client allows attacker to control downloaded file location"
},
{
"cve": "CVE-2026-59999",
"cwe": {
"id": "CWE-358",
"name": "Improperly Implemented Security Check for Standard"
},
"discovery_date": "2026-07-08T01:01:55.619428+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2497942"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in `sshd`, the OpenSSH server daemon. When `DisableForwarding=yes` is configured to prevent network traffic forwarding, it incorrectly fails to take precedence over `PermitTunnel=yes`. This allows a remote attacker to bypass intended security restrictions and establish a tunnel, potentially leading to unauthorized network access or circumvention of security policies, even when forwarding is explicitly disabled.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "openssh: OpenSSH sshd: Security bypass due to incorrect handling of forwarding and tunneling options",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This Moderate severity flaw in OpenSSH `sshd` allows `PermitTunnel=yes` to override `DisableForwarding=yes`, potentially bypassing intended security controls. In Red Hat environments where `DisableForwarding` is used to restrict SSH session capabilities, an attacker who compromises a user\u0027s session could still establish a tunnel, leading to unauthorized network access or data exfiltration. This bypass occurs even when administrators explicitly attempt to prevent forwarding, though `PermitTunnel` is not enabled by default.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-59999"
},
{
"category": "external",
"summary": "RHBZ#2497942",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2497942"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-59999",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-59999"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-59999",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59999"
},
{
"category": "external",
"summary": "https://marc.info/?l=openssh-unix-dev\u0026m=178333966933090\u0026w=2",
"url": "https://marc.info/?l=openssh-unix-dev\u0026m=178333966933090\u0026w=2"
},
{
"category": "external",
"summary": "https://www.openssh.org/releasenotes.html#10.4p1",
"url": "https://www.openssh.org/releasenotes.html#10.4p1"
},
{
"category": "external",
"summary": "https://www.openwall.com/lists/oss-security/2026/07/06/5",
"url": "https://www.openwall.com/lists/oss-security/2026/07/06/5"
}
],
"release_date": "2026-07-08T00:13:08.397000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-11-11T01:47:16+00:00",
"details": "For OpenShift Container Platform 4.17 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n (For x86_64 architecture)\n The image digest is sha256:0be445d72f89f8141dd06ea65022e4c5c55bb62e540b197ee2206d5873242f51\n\n (For s390x architecture)\n The image digest is sha256:76baeb5c514cded4b1de03a9720f072d7cb7193a53281cc3b13f0ff368e302c2\n\n (For ppc64le architecture)\n The image digest is sha256:0bc58e2a8b27d8618160594e249d135768b9f257f79e711688f46b457af4c816\n\n (For aarch64 architecture)\n The image digest is sha256:3ac6c84af6eabdcb162237f7b8ad058bfd12f4458fc654263f927c945af77ac5\n\nAll OpenShift Container Platform 4.17 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html-single/updating_clusters/index#updating-cluster-cli.",
"product_ids": [
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"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:96282"
},
{
"category": "workaround",
"details": "To mitigate this issue, if `DisableForwarding=yes` is set in `/etc/ssh/sshd_config` to prevent all forwarding, ensure that `PermitTunnel` is explicitly set to `no` in the same configuration file. This will enforce the intended security policy.\n\nAfter modifying `/etc/ssh/sshd_config`, restart the `sshd` service for the changes to take effect. This may temporarily interrupt active SSH sessions.",
"product_ids": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"version": "3.1"
},
"products": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "openssh: OpenSSH sshd: Security bypass due to incorrect handling of forwarding and tunneling options"
},
{
"cve": "CVE-2026-60002",
"cwe": {
"id": "CWE-825",
"name": "Expired Pointer Dereference"
},
"discovery_date": "2026-07-08T01:01:33.808610+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2497936"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in OpenSSH. A remote attacker could exploit a use-after-free vulnerability on the client side when a server changes its host key during a key re-exchange. This could lead to high impact on confidentiality and integrity, and low impact on availability.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "openssh: OpenSSH: Use-after-free vulnerability during host key re-exchange on the client side",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This Important flaw in OpenSSH client could allow a malicious SSH server to execute arbitrary code on the connecting client due to a use-after-free vulnerability during host key re-exchange. While requiring a connection to a specially crafted server, the potential for high impact on client confidentiality and integrity elevates the severity beyond Moderate.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-60002"
},
{
"category": "external",
"summary": "RHBZ#2497936",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2497936"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-60002",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-60002"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-60002",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-60002"
},
{
"category": "external",
"summary": "https://marc.info/?l=openssh-unix-dev\u0026m=178333966933090\u0026w=2",
"url": "https://marc.info/?l=openssh-unix-dev\u0026m=178333966933090\u0026w=2"
},
{
"category": "external",
"summary": "https://www.openssh.org/releasenotes.html#10.4p1",
"url": "https://www.openssh.org/releasenotes.html#10.4p1"
},
{
"category": "external",
"summary": "https://www.openwall.com/lists/oss-security/2026/07/06/5",
"url": "https://www.openwall.com/lists/oss-security/2026/07/06/5"
}
],
"release_date": "2026-07-08T00:17:33.058000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-11-11T01:47:16+00:00",
"details": "For OpenShift Container Platform 4.17 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n (For x86_64 architecture)\n The image digest is sha256:0be445d72f89f8141dd06ea65022e4c5c55bb62e540b197ee2206d5873242f51\n\n (For s390x architecture)\n The image digest is sha256:76baeb5c514cded4b1de03a9720f072d7cb7193a53281cc3b13f0ff368e302c2\n\n (For ppc64le architecture)\n The image digest is sha256:0bc58e2a8b27d8618160594e249d135768b9f257f79e711688f46b457af4c816\n\n (For aarch64 architecture)\n The image digest is sha256:3ac6c84af6eabdcb162237f7b8ad058bfd12f4458fc654263f927c945af77ac5\n\nAll OpenShift Container Platform 4.17 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html-single/updating_clusters/index#updating-cluster-cli.",
"product_ids": [
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"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:96282"
},
{
"category": "workaround",
"details": "To mitigate this issue, OpenSSH clients should only connect to trusted SSH servers. Enforcing strict host key checking and carefully managing `known_hosts` files can help prevent connections to servers with unexpected or altered host keys, thereby reducing exposure to this client-side vulnerability.",
"product_ids": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
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"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 7.7,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
"version": "3.1"
},
"products": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "openssh: OpenSSH: Use-after-free vulnerability during host key re-exchange on the client side"
},
{
"cve": "CVE-2026-64564",
"cwe": {
"id": "CWE-825",
"name": "Expired Pointer Dereference"
},
"discovery_date": "2026-08-04T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2510890"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the Stream Control Transmission Protocol (SCTP) implementation within the Linux kernel. A remote attacker could send a specially crafted sequence of ASCONF (Add IP Address Configuration) chunks, including DEL-IP (Delete IP Address) parameters, to trigger a use-after-free condition. This memory corruption could lead to a system crash, resulting in a denial of service, and potentially allow for arbitrary code execution.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: sctp: don\u0027t free the ASCONF\u0027s own transport in DEL-IP processing",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This vulnerability is rated as an Important impact on Red Hat Enterprise Linux because memory corruption within kernel space can lead to a system-wide denial of service or facilitate privilege escalation. However, the SCTP kernel module is not loaded by default on standard Red Hat installations unless explicitly configured or required by running applications. Consequently, exposure is limited to environments where SCTP services are actively utilized or where local unprivileged users can trigger module loading.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-64564"
},
{
"category": "external",
"summary": "RHBZ#2510890",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2510890"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-64564",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-64564"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-64564",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64564"
},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2026080404-CVE-2026-64564-6762@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2026080404-CVE-2026-64564-6762@gregkh/T"
}
],
"release_date": "2026-08-04T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-11-11T01:47:16+00:00",
"details": "For OpenShift Container Platform 4.17 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n (For x86_64 architecture)\n The image digest is sha256:0be445d72f89f8141dd06ea65022e4c5c55bb62e540b197ee2206d5873242f51\n\n (For s390x architecture)\n The image digest is sha256:76baeb5c514cded4b1de03a9720f072d7cb7193a53281cc3b13f0ff368e302c2\n\n (For ppc64le architecture)\n The image digest is sha256:0bc58e2a8b27d8618160594e249d135768b9f257f79e711688f46b457af4c816\n\n (For aarch64 architecture)\n The image digest is sha256:3ac6c84af6eabdcb162237f7b8ad058bfd12f4458fc654263f927c945af77ac5\n\nAll OpenShift Container Platform 4.17 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html-single/updating_clusters/index#updating-cluster-cli.",
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"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:96282"
},
{
"category": "workaround",
"details": "To mitigate this issue, prevent the `sctp` kernel module from loading. Create a file named `/etc/modprobe.d/disable-sctp.conf` with the following content:\n\n```\ninstall sctp /bin/true\nblacklist sctp\n```\n\nAfter creating the file, regenerate the initramfs and reboot the system for the changes to take effect. Applications or services that rely on the SCTP protocol cannot use this mitigation and should prioritize applying the fix.",
"product_ids": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
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"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "kernel: sctp: don\u0027t free the ASCONF\u0027s own transport in DEL-IP processing"
},
{
"cve": "CVE-2026-68121",
"cwe": {
"id": "CWE-825",
"name": "Expired Pointer Dereference"
},
"discovery_date": "2026-08-10T12:25:51.369604+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2513233"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the Linux kernel\u0027s PPPoE (Point-to-Point Protocol over Ethernet) implementation. This vulnerability occurs because a pointer to network packet data is not updated after memory is reallocated, leading to the use of an outdated memory address. An attacker with local access could potentially trigger this condition, causing memory corruption. This could result in a system crash (denial of service) or other unpredictable system behavior.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: pppoe: reload header pointer after dev_hard_header()",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This vulnerability is rated as an Important severity flaw because an authenticated local user can exploit a use-after-free condition to corrupt kernel memory, potentially achieving local privilege escalation or crashing the operating system. Although triggering the issue requires specific timing during packet transmission and network device manipulation, the potential blast radius involves compromise of kernel memory. Enterprise Red Hat Enterprise Linux installations rarely configure PPPoE interfaces, which significantly limits practical exposure in default environments.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-68121"
},
{
"category": "external",
"summary": "RHBZ#2513233",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513233"
},
{
"category": "external",
"summary": "RHSB-2026-011",
"url": "https://access.redhat.com/security/vulnerabilities/RHSB-2026-011"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-68121",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-68121"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-68121",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68121"
},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2026081056-CVE-2026-68121-b20f@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2026081056-CVE-2026-68121-b20f@gregkh/T"
}
],
"release_date": "2026-08-10T11:58:41.489000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-11-11T01:47:16+00:00",
"details": "For OpenShift Container Platform 4.17 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n (For x86_64 architecture)\n The image digest is sha256:0be445d72f89f8141dd06ea65022e4c5c55bb62e540b197ee2206d5873242f51\n\n (For s390x architecture)\n The image digest is sha256:76baeb5c514cded4b1de03a9720f072d7cb7193a53281cc3b13f0ff368e302c2\n\n (For ppc64le architecture)\n The image digest is sha256:0bc58e2a8b27d8618160594e249d135768b9f257f79e711688f46b457af4c816\n\n (For aarch64 architecture)\n The image digest is sha256:3ac6c84af6eabdcb162237f7b8ad058bfd12f4458fc654263f927c945af77ac5\n\nAll OpenShift Container Platform 4.17 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html-single/updating_clusters/index#updating-cluster-cli.",
"product_ids": [
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"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:96282"
},
{
"category": "workaround",
"details": "See the security bulletin for a detailed mitigation procedure.",
"product_ids": [
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}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.3,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H",
"version": "3.1"
},
"products": [
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"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Low"
}
],
"title": "kernel: pppoe: reload header pointer after dev_hard_header()"
},
{
"cve": "CVE-2026-80792",
"cwe": {
"id": "CWE-825",
"name": "Expired Pointer Dereference"
},
"discovery_date": "2026-09-04T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2528542"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the Linux kernel\u0027s IPv6 networking stack. A use-after-free vulnerability exists in the `ip6_finish_output2()` function, where a cached pointer to the IPv6 destination address can become stale after memory reallocation. An attacker could potentially exploit this to leak sensitive kernel data, misdirect network traffic, or cause a system crash (Denial of Service).",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: ipv6: fix use-after-free in ip6_finish_output2()",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This vulnerability is rated as Important severity because successful exploitation allows a local user to leverage a use-after-free condition during lightweight tunnel transmission, potentially compromising system stability, leaking sensitive kernel memory, or tampering with network routing tables. Systems running Red Hat Enterprise Linux 9 and 10 or OpenShift Container Platform are affected when IPv6 network traffic undergoes lightweight tunnel encapsulation or BPF transit actions. Earlier releases including Red Hat Enterprise Linux 7 and 8 do not incorporate the vulnerable networking logic and are not affected.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
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"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-80792"
},
{
"category": "external",
"summary": "RHBZ#2528542",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2528542"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-80792",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-80792"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-80792",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80792"
},
{
"category": "external",
"summary": "https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80792.mbox",
"url": "https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80792.mbox"
}
],
"release_date": "2026-09-04T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-11-11T01:47:16+00:00",
"details": "For OpenShift Container Platform 4.17 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n (For x86_64 architecture)\n The image digest is sha256:0be445d72f89f8141dd06ea65022e4c5c55bb62e540b197ee2206d5873242f51\n\n (For s390x architecture)\n The image digest is sha256:76baeb5c514cded4b1de03a9720f072d7cb7193a53281cc3b13f0ff368e302c2\n\n (For ppc64le architecture)\n The image digest is sha256:0bc58e2a8b27d8618160594e249d135768b9f257f79e711688f46b457af4c816\n\n (For aarch64 architecture)\n The image digest is sha256:3ac6c84af6eabdcb162237f7b8ad058bfd12f4458fc654263f927c945af77ac5\n\nAll OpenShift Container Platform 4.17 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html-single/updating_clusters/index#updating-cluster-cli.",
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"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
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],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:96282"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
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],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.0,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
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}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "kernel: ipv6: fix use-after-free in ip6_finish_output2()"
},
{
"cve": "CVE-2026-80863",
"cwe": {
"id": "CWE-787",
"name": "Out-of-bounds Write"
},
"discovery_date": "2026-09-04T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2528665"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the Linux kernel\u0027s RDMA/rxe component. A local user could exploit a memory corruption vulnerability in the `free_rd_atomic_resources()` function by updating the `max_dest_rd_atomic` value before the old array is properly freed, leading to an out-of-bounds write. This issue can cause a system crash, resulting in a denial of service (DoS).",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: RDMA/rxe: Fix OOB in free_rd_atomic_resources()",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "An OOB write in RDMA/RXE free_rd_atomic_resources can occur because qp attr max_dest_rd_atomic is updated before the old rd atomic resources array is freed. The free path then uses the new larger bound while walking the old smaller allocation, which can write past the kmalloc object and corrupt slab memory. The issue is not directly network reachable because the triggering operation is a local uverbs control path rather than inbound RDMA traffic.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-80863"
},
{
"category": "external",
"summary": "RHBZ#2528665",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2528665"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-80863",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-80863"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-80863",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80863"
},
{
"category": "external",
"summary": "https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80863.mbox",
"url": "https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80863.mbox"
}
],
"release_date": "2026-09-04T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-11-11T01:47:16+00:00",
"details": "For OpenShift Container Platform 4.17 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n (For x86_64 architecture)\n The image digest is sha256:0be445d72f89f8141dd06ea65022e4c5c55bb62e540b197ee2206d5873242f51\n\n (For s390x architecture)\n The image digest is sha256:76baeb5c514cded4b1de03a9720f072d7cb7193a53281cc3b13f0ff368e302c2\n\n (For ppc64le architecture)\n The image digest is sha256:0bc58e2a8b27d8618160594e249d135768b9f257f79e711688f46b457af4c816\n\n (For aarch64 architecture)\n The image digest is sha256:3ac6c84af6eabdcb162237f7b8ad058bfd12f4458fc654263f927c945af77ac5\n\nAll OpenShift Container Platform 4.17 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html-single/updating_clusters/index#updating-cluster-cli.",
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"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:96282"
},
{
"category": "workaround",
"details": "To mitigate this issue, prevent module rdma_rxe from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.",
"product_ids": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
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"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
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]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.3,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H",
"version": "3.1"
},
"products": [
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"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "kernel: RDMA/rxe: Fix OOB in free_rd_atomic_resources()"
},
{
"cve": "CVE-2026-80864",
"cwe": {
"id": "CWE-825",
"name": "Expired Pointer Dereference"
},
"discovery_date": "2026-09-04T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2528646"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the Linux kernel\u0027s Remote Direct Memory Access (RDMA) subsystem, specifically within the rxe component. A local, unprivileged user could exploit a race condition during a queue pair modification operation. This could lead to a use-after-free vulnerability, allowing the attacker to cause a system crash and resulting in a Denial of Service (DoS).",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: RDMA/rxe: Fix responder UAF on IB_QP_MAX_DEST_RD_ATOMIC modify_qp",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
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},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-80864"
},
{
"category": "external",
"summary": "RHBZ#2528646",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2528646"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-80864",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-80864"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-80864",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80864"
},
{
"category": "external",
"summary": "https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80864.mbox",
"url": "https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80864.mbox"
}
],
"release_date": "2026-09-04T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-11-11T01:47:16+00:00",
"details": "For OpenShift Container Platform 4.17 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n (For x86_64 architecture)\n The image digest is sha256:0be445d72f89f8141dd06ea65022e4c5c55bb62e540b197ee2206d5873242f51\n\n (For s390x architecture)\n The image digest is sha256:76baeb5c514cded4b1de03a9720f072d7cb7193a53281cc3b13f0ff368e302c2\n\n (For ppc64le architecture)\n The image digest is sha256:0bc58e2a8b27d8618160594e249d135768b9f257f79e711688f46b457af4c816\n\n (For aarch64 architecture)\n The image digest is sha256:3ac6c84af6eabdcb162237f7b8ad058bfd12f4458fc654263f927c945af77ac5\n\nAll OpenShift Container Platform 4.17 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html-single/updating_clusters/index#updating-cluster-cli.",
"product_ids": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:96282"
},
{
"category": "workaround",
"details": "To mitigate this issue, prevent the rdma_rxe kernel module from being loaded.\n\n1. Create a configuration file in /etc/modprobe.d to disable loading of the module:\n# echo \"install rdma_rxe /bin/true\" \u003e /etc/modprobe.d/disable-rdma_rxe.conf\n\n2. If the module is currently loaded, attempt to unload it:\n# modprobe -r rdma_rxe\n\nCaveats:\nDisabling this module prevents the creation and operation of software RDMA over Converged Ethernet (Soft-RoCE) devices. Applications requiring rdma_rxe will fail to initialize. If the module is currently in active use and cannot be unloaded dynamically, a system reboot is required to ensure the module is fully disabled.",
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"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.0,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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"threats": [
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}
],
"title": "kernel: RDMA/rxe: Fix responder UAF on IB_QP_MAX_DEST_RD_ATOMIC modify_qp"
},
{
"cve": "CVE-2026-86145",
"cwe": {
"id": "CWE-787",
"name": "Out-of-bounds Write"
},
"discovery_date": "2026-09-05T05:20:54.676360+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2528993"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in PCRE2. An out-of-bounds write vulnerability exists in the `pcre2_dfa_match` function due to improper size checking when reusing cached workspace blocks. A remote attacker could exploit this by providing a specially crafted regular expression or a recursive pattern in conjunction with a small heap limit. This could lead to data corruption or potentially arbitrary code execution, compromising the integrity and availability of the system.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "pcre2: PCRE2: Out-of-bounds write allows arbitrary code execution via crafted regular expressions",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Important: An out-of-bounds write vulnerability in the PCRE2 library, specifically within the `pcre2_dfa_match` function, could allow arbitrary code execution. This flaw is exploitable in Red Hat products when processing attacker-controlled regular expressions or when a recursive pattern is used in conjunction with a small, API-set heap limit, making it dependent on specific application usage patterns.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
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"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
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"category": "self",
"summary": "Canonical URL",
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},
{
"category": "external",
"summary": "RHBZ#2528993",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2528993"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-86145",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-86145"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-86145",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-86145"
},
{
"category": "external",
"summary": "https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.48",
"url": "https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.48"
},
{
"category": "external",
"summary": "https://github.com/PCRE2Project/pcre2/security/advisories/GHSA-3r4p-g7gg-ppmf",
"url": "https://github.com/PCRE2Project/pcre2/security/advisories/GHSA-3r4p-g7gg-ppmf"
}
],
"release_date": "2026-09-05T05:09:25.571000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-11-11T01:47:16+00:00",
"details": "For OpenShift Container Platform 4.17 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n (For x86_64 architecture)\n The image digest is sha256:0be445d72f89f8141dd06ea65022e4c5c55bb62e540b197ee2206d5873242f51\n\n (For s390x architecture)\n The image digest is sha256:76baeb5c514cded4b1de03a9720f072d7cb7193a53281cc3b13f0ff368e302c2\n\n (For ppc64le architecture)\n The image digest is sha256:0bc58e2a8b27d8618160594e249d135768b9f257f79e711688f46b457af4c816\n\n (For aarch64 architecture)\n The image digest is sha256:3ac6c84af6eabdcb162237f7b8ad058bfd12f4458fc654263f927c945af77ac5\n\nAll OpenShift Container Platform 4.17 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html-single/updating_clusters/index#updating-cluster-cli.",
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"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:96282"
},
{
"category": "workaround",
"details": "To mitigate this Improper Protection of Alternate Path vulnerability, ensure that secondary execution branches\u2014such as the reuse of cached memory workspaces\u2014enforce the exact same size and boundary checks as the primary memory allocation paths. Limit exposure by preventing untrusted user input from directly controlling PCRE2 regular expressions, and strictly avoid utilizing recursive matching patterns when operating under a low heap limit. Apply a defense-in-depth strategy by validating all inputs comprehensively.",
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"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L",
"version": "3.1"
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"details": "Important"
}
],
"title": "pcre2: PCRE2: Out-of-bounds write allows arbitrary code execution via crafted regular expressions"
},
{
"cve": "CVE-2026-89161",
"cwe": {
"id": "CWE-1341",
"name": "Multiple Releases of Same Resource or Handle"
},
"discovery_date": "2026-09-11T04:21:06.963234+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2531747"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in PCRE2, a library for processing regular expressions. The `pcre2_jit_match` function, which handles just-in-time (JIT) compilation for regular expressions, incorrectly manages memory when processing certain inputs. This memory corruption vulnerability could allow a local attacker to cause the application to crash, leading to a denial of service, or potentially execute unauthorized code.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "pcre2: PCRE2: Memory corruption vulnerability in pcre2_jit_match",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This is an Important memory corruption vulnerability in PCRE2\u0027s JIT compiler. An attacker could exploit a flaw in `pcre2_jit_match` when a previously copied subject is passed as context, potentially leading to arbitrary code execution or denial of service. The high attack complexity and local attack vector reduce the overall risk, but the widespread use of PCRE2 and the potential for severe impact warrant the Important classification.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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"references": [
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"category": "self",
"summary": "Canonical URL",
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},
{
"category": "external",
"summary": "RHBZ#2531747",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2531747"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-89161",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-89161"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-89161",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89161"
},
{
"category": "external",
"summary": "https://github.com/PCRE2Project/pcre2/pull/937",
"url": "https://github.com/PCRE2Project/pcre2/pull/937"
},
{
"category": "external",
"summary": "https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.48",
"url": "https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.48"
}
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"release_date": "2026-09-11T04:11:51.666000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-11-11T01:47:16+00:00",
"details": "For OpenShift Container Platform 4.17 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n (For x86_64 architecture)\n The image digest is sha256:0be445d72f89f8141dd06ea65022e4c5c55bb62e540b197ee2206d5873242f51\n\n (For s390x architecture)\n The image digest is sha256:76baeb5c514cded4b1de03a9720f072d7cb7193a53281cc3b13f0ff368e302c2\n\n (For ppc64le architecture)\n The image digest is sha256:0bc58e2a8b27d8618160594e249d135768b9f257f79e711688f46b457af4c816\n\n (For aarch64 architecture)\n The image digest is sha256:3ac6c84af6eabdcb162237f7b8ad058bfd12f4458fc654263f927c945af77ac5\n\nAll OpenShift Container Platform 4.17 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html-single/updating_clusters/index#updating-cluster-cli.",
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"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:96282"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
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"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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}
],
"threats": [
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"category": "impact",
"details": "Important"
}
],
"title": "pcre2: PCRE2: Memory corruption vulnerability in pcre2_jit_match"
},
{
"cve": "CVE-2026-98432",
"cwe": {
"id": "CWE-825",
"name": "Expired Pointer Dereference"
},
"discovery_date": "2026-10-15T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2553390"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the Linux kernel\u0027s IPv4 networking subsystem. A race condition occurs during concurrent processing of retransmitted Transmission Control Protocol (TCP) connection requests or socket migrations, allowing socket options to be freed while still in use. A remote attacker could exploit this vulnerability by sending specially timed network requests, triggering a use-after-free condition. This could results in system crash leading to a Denial of Service (DoS), memory corruption, or remote code execution.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: ipv4: free inet_opt and ireq_opt after an RCU grace period",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This vulnerability is rated as Critical severity for Red Hat Enterprise Linux because it allows an unauthenticated remote attacker to cause kernel memory corruption or an immediate system crash over standard IPv4 TCP network traffic without requiring local privileges or user interaction. In default enterprise configurations across Red Hat environments, TCP services accept incoming connections without specialized tuning, making the concurrent connection handling paths inherently exposed to remote networks. Although reliably executing arbitrary code through this timing-sensitive use-after-free scenario requires precise heap control, the lack of network prerequisites and the potential for severe system instability elevate the impact above Important.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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"summary": "Canonical URL",
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"category": "external",
"summary": "RHBZ#2553390",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2553390"
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"category": "external",
"summary": "RHSB-2026-016",
"url": "https://access.redhat.com/security/vulnerabilities/RHSB-2026-016"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-98432",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-98432"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-98432",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98432"
},
{
"category": "external",
"summary": "https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98432.mbox",
"url": "https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98432.mbox"
}
],
"release_date": "2026-10-15T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-11-11T01:47:16+00:00",
"details": "For OpenShift Container Platform 4.17 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n (For x86_64 architecture)\n The image digest is sha256:0be445d72f89f8141dd06ea65022e4c5c55bb62e540b197ee2206d5873242f51\n\n (For s390x architecture)\n The image digest is sha256:76baeb5c514cded4b1de03a9720f072d7cb7193a53281cc3b13f0ff368e302c2\n\n (For ppc64le architecture)\n The image digest is sha256:0bc58e2a8b27d8618160594e249d135768b9f257f79e711688f46b457af4c816\n\n (For aarch64 architecture)\n The image digest is sha256:3ac6c84af6eabdcb162237f7b8ad058bfd12f4458fc654263f927c945af77ac5\n\nAll OpenShift Container Platform 4.17 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html-single/updating_clusters/index#updating-cluster-cli.",
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],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:96282"
},
{
"category": "workaround",
"details": "See the security bulletin for a detailed mitigation procedure.",
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}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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}
],
"threats": [
{
"category": "impact",
"details": "Critical"
}
],
"title": "kernel: ipv4: free inet_opt and ireq_opt after an RCU grace period"
},
{
"cve": "CVE-2026-99999",
"cwe": {
"id": "CWE-787",
"name": "Out-of-bounds Write"
},
"discovery_date": "2026-10-15T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2553429"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the Linux kernel. A local attacker or untrusted guest virtual machine can exploit this vulnerability by transmitting network packets containing malformed checksum metadata into the IPv4 networking subsystem. This failure to validate checksum metadata can corrupt memory during packet handling, potentially leading to arbitrary code execution on the host, a system crash resulting in Denial of Service (DoS), or information disclosure of sensitive memory.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: ipv4: validate checksum_start before completing checksum",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This IMPORTANT-severity flaw affects the Linux kernel as shipped in Red Hat products, including the kernel and kernel-rt packages in Red Hat Enterprise Linux and the kernels shipped in Red Hat In-Vehicle OS. The IPv4 networking subsystem does not validate packet checksum metadata before completing a checksum: when a packet with a malformed checksum_start value enters the IPv4 stack, skb_checksum_help() can write out of bounds and corrupt the network header and other kernel memory (CWE-787). A local attacker or an untrusted guest virtual machine able to transmit such packets into an affected host could exploit this to crash the system (denial of service), disclose sensitive kernel memory, or potentially execute arbitrary code on the host. Red Hat tracks this flaw as a KEV active-exploit case. All currently tracked Red Hat product streams are marked affected, and fixes are being pursued by the responsible Red Hat product teams under delegated resolution. Red Hat\u0027s severity differs from the upstream assessment: Red Hat assigns a CVSS 3.1 score of 8.8 (IMPORTANT, AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H), while the CVE.org record assigns 9.3 (CRITICAL, AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H); the two assessments differ on the privileges-required metric.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-99999"
},
{
"category": "external",
"summary": "RHBZ#2553429",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2553429"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-99999",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-99999"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-99999",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-99999"
},
{
"category": "external",
"summary": "https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-99999.mbox",
"url": "https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-99999.mbox"
}
],
"release_date": "2026-10-15T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-11-11T01:47:16+00:00",
"details": "For OpenShift Container Platform 4.17 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n (For x86_64 architecture)\n The image digest is sha256:0be445d72f89f8141dd06ea65022e4c5c55bb62e540b197ee2206d5873242f51\n\n (For s390x architecture)\n The image digest is sha256:76baeb5c514cded4b1de03a9720f072d7cb7193a53281cc3b13f0ff368e302c2\n\n (For ppc64le architecture)\n The image digest is sha256:0bc58e2a8b27d8618160594e249d135768b9f257f79e711688f46b457af4c816\n\n (For aarch64 architecture)\n The image digest is sha256:3ac6c84af6eabdcb162237f7b8ad058bfd12f4458fc654263f927c945af77ac5\n\nAll OpenShift Container Platform 4.17 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html-single/updating_clusters/index#updating-cluster-cli.",
"product_ids": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:96282"
},
{
"category": "workaround",
"details": "Check the virtio-net device name with monitor command \"info network\":\n~~~\n(qemu) info network\nnet0: index=0,type=nic,model=virtio-net-pci,macaddr=52:54:00:12:34:57\n \\ vhost0: index=0,type=tap,ifname=tap-vm0,script=no,downscript=no\n~~~\n\nRemove the device and re-add it with csum=off:\n~~~\n(qemu) device_del net0\n(qemu) device_add virtio-net-pci,netdev=vhost0,id=net0,mac=52:54:00:12:34:57,csum=off\n~~~",
"product_ids": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "kernel: ipv4: validate checksum_start before completing checksum"
},
{
"cve": "CVE-2026-103111",
"cwe": {
"id": "CWE-787",
"name": "Out-of-bounds Write"
},
"discovery_date": "2026-09-30T04:40:56.869940+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2543797"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in pcre2. When an application processes attacker-controlled regular expressions using certain Just-In-Time (JIT) compiler interfaces, an out-of-bounds write with arbitrary data can occur. An attacker could exploit this vulnerability to achieve arbitrary code execution, corrupt memory, or cause a denial of service (DoS).",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "pcre2: pcre2: Out-of-bounds write via crafted regular expression",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This vulnerability is rated as an Important impact because applications that compile untrusted regular expressions using PCRE2 Just-In-Time (JIT) execution interfaces may allow memory corruption and arbitrary code execution. The risk is primarily confined to specific custom applications or specialized network services that process external regular expressions using vulnerable JIT routines.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-103111"
},
{
"category": "external",
"summary": "RHBZ#2543797",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543797"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-103111",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-103111"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-103111",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-103111"
},
{
"category": "external",
"summary": "https://github.com/PCRE2Project/pcre2/security/advisories/GHSA-r9hj-j2rw-4q3m",
"url": "https://github.com/PCRE2Project/pcre2/security/advisories/GHSA-r9hj-j2rw-4q3m"
}
],
"release_date": "2026-09-30T04:13:59.115000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-11-11T01:47:16+00:00",
"details": "For OpenShift Container Platform 4.17 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n (For x86_64 architecture)\n The image digest is sha256:0be445d72f89f8141dd06ea65022e4c5c55bb62e540b197ee2206d5873242f51\n\n (For s390x architecture)\n The image digest is sha256:76baeb5c514cded4b1de03a9720f072d7cb7193a53281cc3b13f0ff368e302c2\n\n (For ppc64le architecture)\n The image digest is sha256:0bc58e2a8b27d8618160594e249d135768b9f257f79e711688f46b457af4c816\n\n (For aarch64 architecture)\n The image digest is sha256:3ac6c84af6eabdcb162237f7b8ad058bfd12f4458fc654263f927c945af77ac5\n\nAll OpenShift Container Platform 4.17 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html-single/updating_clusters/index#updating-cluster-cli.",
"product_ids": [
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"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:96282"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
"product_ids": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 7.6,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L",
"version": "3.1"
},
"products": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "pcre2: pcre2: Out-of-bounds write via crafted regular expression"
},
{
"cve": "CVE-2026-111497",
"cwe": {
"id": "CWE-787",
"name": "Out-of-bounds Write"
},
"discovery_date": "2026-10-22T13:42:58.596140+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2558973"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the Google Brotli decoder. An out-of-bounds write in the block-type switch handling in c/dec/decode.c can be triggered by a crafted Brotli-compressed stream. When an application decompresses untrusted Brotli data, this can lead to memory disclosure, denial of service, or potentially arbitrary code execution.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "brotli: Out-of-Bounds Write in Google Brotli Decoder",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This issue is rated Important. Exploitation requires that the target decompress attacker-controlled Brotli data (for example HTTP content negotiated with Content-Encoding: br, or APIs such as Node.js zlib / fetch() that decode Brotli). The vulnerable path is reached with a malformed stream rather than typical well-formed encoder output. Red Hat Enterprise Linux compiler and runtime hardenings - including Address Space Layout Randomization (ASLR), Non-eXecutable (NX) memory, FORTIFY_SOURCE, and SELinux - increase the difficulty of turning this memory corruption into reliable code execution, though they do not eliminate crashes or all impact. Combined with the Attack Requirements noted by the CNA (CVSS v4 AT:P), Red Hat scores Attack Complexity as High and rates the flaw Important rather than Critical.\n\n---\n\nThe Node.js packages in Red Hat Enterprise Linux use either system version of brotli or bundled version. Some Node.js versions are marked \"Not affected\" because they utilize system brotli. For these versions, the Node.js package itself does not require updating. However, customers must still update the system brotli/libbrotli package to address the vulnerability for these Node.js installations.\n\nFollowing is the overview of Node.js versions use system or bundled version.\n\n- Node.js 22 in Red Hat Enterprise Linux 8 and 9, provided via nodejs:22 module, uses system brotli.\n- Node.js 24 in Red Hat Enterprise Linux 8 and 9, provided via nodejs:24 modules, use bundled brotli.\n- Node.js 22 and 24 in Red Hat Enterprise Linux 10, provided via nodejs22 and nodejs24 use system brotli.\n\n---\n\nThe .NET packages in Red Hat Enterprise Linux may either use system version of brotli or bundled version. Following is the overview of .NET versions use system or bundled version.\n\n- .NET 8.0 in Red Hat Enterprise Linux 8, 9, and 10, provided via dotnet8.0 packages, use bundled brotli.\n- .NET 9.0, 10.0, and 11.0 in Red Hat Enterprise Linux 8, 9, and 10, provided via dotnet9.0, dotnet10.0, and dotnet11.0 packages, use system brotli.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-111497"
},
{
"category": "external",
"summary": "RHBZ#2558973",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2558973"
},
{
"category": "external",
"summary": "RHSB-2026-015",
"url": "https://access.redhat.com/security/vulnerabilities/RHSB-2026-015"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-111497",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-111497"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-111497",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-111497"
},
{
"category": "external",
"summary": "https://nodejs.org/en/blog/vulnerability/october-2026-security-releases#nodejs-brotli-decoder-out-of-bounds-write-permits-remote-code-execution-cve-2026-111497---high",
"url": "https://nodejs.org/en/blog/vulnerability/october-2026-security-releases#nodejs-brotli-decoder-out-of-bounds-write-permits-remote-code-execution-cve-2026-111497---high"
},
{
"category": "external",
"summary": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
}
],
"release_date": "2026-10-22T13:35:41.975000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-11-11T01:47:16+00:00",
"details": "For OpenShift Container Platform 4.17 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n (For x86_64 architecture)\n The image digest is sha256:0be445d72f89f8141dd06ea65022e4c5c55bb62e540b197ee2206d5873242f51\n\n (For s390x architecture)\n The image digest is sha256:76baeb5c514cded4b1de03a9720f072d7cb7193a53281cc3b13f0ff368e302c2\n\n (For ppc64le architecture)\n The image digest is sha256:0bc58e2a8b27d8618160594e249d135768b9f257f79e711688f46b457af4c816\n\n (For aarch64 architecture)\n The image digest is sha256:3ac6c84af6eabdcb162237f7b8ad058bfd12f4458fc654263f927c945af77ac5\n\nAll OpenShift Container Platform 4.17 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html-single/updating_clusters/index#updating-cluster-cli.",
"product_ids": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:96282"
},
{
"category": "workaround",
"details": "See the security bulletin for a detailed mitigation procedure.",
"product_ids": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
}
],
"threats": [
{
"category": "exploit_status",
"date": "2026-10-27T00:00:00+00:00",
"details": "CISA: https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
},
{
"category": "impact",
"details": "Important"
}
],
"title": "brotli: Out-of-Bounds Write in Google Brotli Decoder"
},
{
"cve": "CVE-2026-114406",
"cwe": {
"id": "CWE-295",
"name": "Improper Certificate Validation"
},
"discovery_date": "2026-10-20T09:01:55.916000+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2556046"
}
],
"notes": [
{
"category": "description",
"text": "The system certificate authority (CA) store in Red Hat products, distributed via ca-certificates RPM packages, included multiple root CA certificates of authorities, which signed intermediate CA certificates with weak private keys issued by the eMudhra certificate authority. A man-in-the-middle attacker could use this flaw to issue certificates for arbitrary host names signed by the weak intermediate CA certificates, which would be considered trusted by a TLS/SSL client using system CA store and cause such clients to connect to malicious sites.\n\nDue to inability to only distrust specific intermediate certificates in all clients using the system CA store, root CA certificates of authorities that signed weak intermediate CA certificates are being removed.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "ca-certificates: Distrust eMudhra intermediate CA certificates due to security concerns",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This CVE has been assigned to track trust store updates to distrust compromised certificates, but is not a vulnerability. For details, see RHSB-2026-012.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-114406"
},
{
"category": "external",
"summary": "RHBZ#2556046",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2556046"
},
{
"category": "external",
"summary": "RHSB-2026-012",
"url": "https://access.redhat.com/security/vulnerabilities/RHSB-2026-012"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-114406",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-114406"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-114406",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-114406"
}
],
"release_date": "2026-10-20T13:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-11-11T01:47:16+00:00",
"details": "For OpenShift Container Platform 4.17 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n (For x86_64 architecture)\n The image digest is sha256:0be445d72f89f8141dd06ea65022e4c5c55bb62e540b197ee2206d5873242f51\n\n (For s390x architecture)\n The image digest is sha256:76baeb5c514cded4b1de03a9720f072d7cb7193a53281cc3b13f0ff368e302c2\n\n (For ppc64le architecture)\n The image digest is sha256:0bc58e2a8b27d8618160594e249d135768b9f257f79e711688f46b457af4c816\n\n (For aarch64 architecture)\n The image digest is sha256:3ac6c84af6eabdcb162237f7b8ad058bfd12f4458fc654263f927c945af77ac5\n\nAll OpenShift Container Platform 4.17 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html-single/updating_clusters/index#updating-cluster-cli.",
"product_ids": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:96282"
},
{
"category": "workaround",
"details": "See the security bulletin for a detailed mitigation procedure.",
"product_ids": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"products": [
"9Base-RHOSE-4.17:rhcos-aarch64-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-s390x-417.94.202611061051-0",
"9Base-RHOSE-4.17:rhcos-x86_64-417.94.202611061051-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Critical"
}
],
"title": "ca-certificates: Distrust eMudhra intermediate CA certificates due to security concerns"
}
]
}
Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.