RHSA-2026:57543
Vulnerability from csaf_redhat - Published: 2026-08-25 13:55 - Updated: 2026-08-25 16:02A flaw was found in AMD Zen 2-based processors, affecting components such as the kernel and Xen hypervisor. Improper isolation of shared resources within the CPU operation cache could allow an attacker to corrupt instructions executed at a different privilege level. This could potentially result in privilege escalation, granting an attacker higher system access than intended.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 9Base-RHOSE-4.20:rhcos-aarch64-4.20.9.6.202608181658-0 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 9Base-RHOSE-4.20:rhcos-ppc64le-4.20.9.6.202608181658-0 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 9Base-RHOSE-4.20:rhcos-s390x-4.20.9.6.202608181658-0 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 9Base-RHOSE-4.20:rhcos-x86_64-4.20.9.6.202608181658-0 | — |
Vendor Fix
fix
|
A flaw was found in the Linux kernel's CIFS (Common Internet File System) client. When the `cifs_sanitize_prepath` function processes specially crafted input, such as an empty string or a string containing only delimiters, it can attempt to read data beyond its allocated memory buffer. This out-of-bounds read can lead to a system crash, resulting in a denial of service.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 9Base-RHOSE-4.20:rhcos-aarch64-4.20.9.6.202608181658-0 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 9Base-RHOSE-4.20:rhcos-ppc64le-4.20.9.6.202608181658-0 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 9Base-RHOSE-4.20:rhcos-s390x-4.20.9.6.202608181658-0 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 9Base-RHOSE-4.20:rhcos-x86_64-4.20.9.6.202608181658-0 | — |
Vendor Fix
fix
|
A flaw was found in Vim. When decompressing .tgz archives, the Vimuntar function builds shell commands using shellescape() without the {special} flag. This allows a specially crafted archive filename to trigger Vim cmdline-special expansion and execute arbitrary commands in the context of the current user.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 9Base-RHOSE-4.20:rhcos-aarch64-4.20.9.6.202608181658-0 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 9Base-RHOSE-4.20:rhcos-ppc64le-4.20.9.6.202608181658-0 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 9Base-RHOSE-4.20:rhcos-s390x-4.20.9.6.202608181658-0 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 9Base-RHOSE-4.20:rhcos-x86_64-4.20.9.6.202608181658-0 | — |
Vendor Fix
fix
Workaround
|
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"details": "For OpenShift Container Platform 4.20 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/4.20/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\nsha256:ffb9ee7de8d13bce19d67ce5c6c13c56ad8e9e1906341fccc7c5d12e2fb6d97e\n\n (For s390x architecture)\n The image digest is\nsha256:cc186d91c9aa6912b0c9b37d4ad6a2a351c7d2a25057be1dd877d4fdfa749199\n\n (For ppc64le architecture)\n The image digest is\nsha256:53c1d50692a293687cdb9807dcbbe7fac623d7bfbe43e05424a3ed4669dff1c2\n\n (For aarch64 architecture)\n The image digest is\nsha256:e6afe3fe2624db9921344d41cd507f65156faf84e3bb6ee23a0cf0ec5990b68f\n\nAll OpenShift Container Platform 4.20 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/4.20/html-single/updating_clusters/index#updating-cluster-cli.",
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"text": "A flaw was found in the Linux kernel\u0027s CIFS (Common Internet File System) client. When the `cifs_sanitize_prepath` function processes specially crafted input, such as an empty string or a string containing only delimiters, it can attempt to read data beyond its allocated memory buffer. This out-of-bounds read can lead to a system crash, resulting in a denial of service.",
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"text": "An Important out-of-bounds read flaw in the Linux kernel\u0027s CIFS client can lead to a system crash and denial of service. This vulnerability, present in Red Hat Enterprise Linux 8, 9, and 10, and Red Hat In-Vehicle OS 2, can be triggered by processing specially crafted input to the `cifs_sanitize_prepath` function, potentially disrupting system availability.",
"title": "Statement"
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"url": "https://lore.kernel.org/linux-cve-announce/2026050625-CVE-2026-43112-f37f@gregkh/T"
}
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"category": "vendor_fix",
"date": "2026-08-25T13:55:21+00:00",
"details": "For OpenShift Container Platform 4.20 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/4.20/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\nsha256:ffb9ee7de8d13bce19d67ce5c6c13c56ad8e9e1906341fccc7c5d12e2fb6d97e\n\n (For s390x architecture)\n The image digest is\nsha256:cc186d91c9aa6912b0c9b37d4ad6a2a351c7d2a25057be1dd877d4fdfa749199\n\n (For ppc64le architecture)\n The image digest is\nsha256:53c1d50692a293687cdb9807dcbbe7fac623d7bfbe43e05424a3ed4669dff1c2\n\n (For aarch64 architecture)\n The image digest is\nsha256:e6afe3fe2624db9921344d41cd507f65156faf84e3bb6ee23a0cf0ec5990b68f\n\nAll OpenShift Container Platform 4.20 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/4.20/html-single/updating_clusters/index#updating-cluster-cli.",
"product_ids": [
"9Base-RHOSE-4.20:rhcos-aarch64-4.20.9.6.202608181658-0",
"9Base-RHOSE-4.20:rhcos-ppc64le-4.20.9.6.202608181658-0",
"9Base-RHOSE-4.20:rhcos-s390x-4.20.9.6.202608181658-0",
"9Base-RHOSE-4.20:rhcos-x86_64-4.20.9.6.202608181658-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:57543"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
"version": "3.1"
},
"products": [
"9Base-RHOSE-4.20:rhcos-aarch64-4.20.9.6.202608181658-0",
"9Base-RHOSE-4.20:rhcos-ppc64le-4.20.9.6.202608181658-0",
"9Base-RHOSE-4.20:rhcos-s390x-4.20.9.6.202608181658-0",
"9Base-RHOSE-4.20:rhcos-x86_64-4.20.9.6.202608181658-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "kernel: fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath"
},
{
"cve": "CVE-2026-46483",
"cwe": {
"id": "CWE-78",
"name": "Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)"
},
"discovery_date": "2026-05-15T16:00:58.827425+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2477915"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Vim. When decompressing .tgz archives, the Vimuntar function builds shell commands using shellescape() without the {special} flag. This allows a specially crafted archive filename to trigger Vim cmdline-special expansion and execute arbitrary commands in the context of the current user.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "vim: command injection when decompressing .tgz archives",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "To exploit this issue, an attacker needs to convince a user to decompress a .tgz archive with a specially crafted filename. Additionally, possible arbitrary command execution is restricted to the context of the user running Vim. These conditions limit the exposure of this vulnerability and the potential of a full system compromise. Due to these reasons, this flaw has been rated with a moderate severity.",
"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-4.20:rhcos-aarch64-4.20.9.6.202608181658-0",
"9Base-RHOSE-4.20:rhcos-ppc64le-4.20.9.6.202608181658-0",
"9Base-RHOSE-4.20:rhcos-s390x-4.20.9.6.202608181658-0",
"9Base-RHOSE-4.20:rhcos-x86_64-4.20.9.6.202608181658-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-46483"
},
{
"category": "external",
"summary": "RHBZ#2477915",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2477915"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-46483",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-46483"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-46483",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46483"
},
{
"category": "external",
"summary": "https://github.com/vim/vim/commit/3fb5e58fbc63d86a3e65f1a141b0d67af2aa38a1",
"url": "https://github.com/vim/vim/commit/3fb5e58fbc63d86a3e65f1a141b0d67af2aa38a1"
},
{
"category": "external",
"summary": "https://github.com/vim/vim/releases/tag/v9.2.0479",
"url": "https://github.com/vim/vim/releases/tag/v9.2.0479"
},
{
"category": "external",
"summary": "https://github.com/vim/vim/security/advisories/GHSA-2fpv-9ff7-xg5w",
"url": "https://github.com/vim/vim/security/advisories/GHSA-2fpv-9ff7-xg5w"
}
],
"release_date": "2026-05-15T14:57:31.872000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-08-25T13:55:21+00:00",
"details": "For OpenShift Container Platform 4.20 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/4.20/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\nsha256:ffb9ee7de8d13bce19d67ce5c6c13c56ad8e9e1906341fccc7c5d12e2fb6d97e\n\n (For s390x architecture)\n The image digest is\nsha256:cc186d91c9aa6912b0c9b37d4ad6a2a351c7d2a25057be1dd877d4fdfa749199\n\n (For ppc64le architecture)\n The image digest is\nsha256:53c1d50692a293687cdb9807dcbbe7fac623d7bfbe43e05424a3ed4669dff1c2\n\n (For aarch64 architecture)\n The image digest is\nsha256:e6afe3fe2624db9921344d41cd507f65156faf84e3bb6ee23a0cf0ec5990b68f\n\nAll OpenShift Container Platform 4.20 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/4.20/html-single/updating_clusters/index#updating-cluster-cli.",
"product_ids": [
"9Base-RHOSE-4.20:rhcos-aarch64-4.20.9.6.202608181658-0",
"9Base-RHOSE-4.20:rhcos-ppc64le-4.20.9.6.202608181658-0",
"9Base-RHOSE-4.20:rhcos-s390x-4.20.9.6.202608181658-0",
"9Base-RHOSE-4.20:rhcos-x86_64-4.20.9.6.202608181658-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:57543"
},
{
"category": "workaround",
"details": "To mitigate this vulnerability, do not decompress untrusted .tgz archives with the Vimuntar command. Use \u0027tar -x -z -f\u0027 directly, instead.",
"product_ids": [
"9Base-RHOSE-4.20:rhcos-aarch64-4.20.9.6.202608181658-0",
"9Base-RHOSE-4.20:rhcos-ppc64le-4.20.9.6.202608181658-0",
"9Base-RHOSE-4.20:rhcos-s390x-4.20.9.6.202608181658-0",
"9Base-RHOSE-4.20:rhcos-x86_64-4.20.9.6.202608181658-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.0,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"9Base-RHOSE-4.20:rhcos-aarch64-4.20.9.6.202608181658-0",
"9Base-RHOSE-4.20:rhcos-ppc64le-4.20.9.6.202608181658-0",
"9Base-RHOSE-4.20:rhcos-s390x-4.20.9.6.202608181658-0",
"9Base-RHOSE-4.20:rhcos-x86_64-4.20.9.6.202608181658-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "vim: command injection when decompressing .tgz archives"
}
]
}
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.
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.