RHSA-2026:71016
Vulnerability from csaf_redhat - Published: 2026-09-23 19:09 - Updated: 2026-09-24 21:51Summary
Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update
Severity
Important
Notes
Topic: An update for kernel-rt is now available for Red Hat Enterprise Linux 8.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* kernel: drm/amdgpu: Fix use-after-free race in VM acquire (CVE-2026-43370)
* kernel: mac802154: llsec: add skb_cow_data() before in-place crypto (CVE-2026-63831)
* kernel: sctp: don't free the ASCONF's own transport in DEL-IP processing (CVE-2026-64564)
* kernel: ASoC: SOF: ipc3-control: Validate size in snd_sof_update_control (CVE-2026-72261)
* kernel: xfrm: ah6: validate routing header segments_left (CVE-2026-80844)
* kernel: net: tun: bound receive headroom (CVE-2026-81000)
* kernel: scsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read (CVE-2026-89846)
Bug Fix(es) and Enhancement(s):
* sctp: prevent peer transport count overflow [rhel-8.10.z] (JIRA:RHEL-216297)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in the Linux kernel's AMD GPU (amdgpu) driver. This vulnerability involves a timing issue, known as a race condition, during the process of acquiring a Virtual Machine (VM). When multiple processes attempt to access the same VM simultaneously, a local attacker could exploit this flaw. Successful exploitation could lead to an escalation of privileges, allowing unauthorized access or control, or cause the system to become unstable and crash (denial of service).
7.0 (High)
Affected products
Fixed
30 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-0:4.18.0-553.167.1.rt7.508.el8_10.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-core-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-debug-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-debug-core-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-debug-debuginfo-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-debug-devel-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-debug-kvm-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-debug-modules-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-debug-modules-extra-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-debuginfo-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-debuginfo-common-x86_64-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-devel-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-kvm-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-modules-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-modules-extra-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-0:4.18.0-553.167.1.rt7.508.el8_10.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-core-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-debug-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-debug-core-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-debug-debuginfo-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-debug-devel-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-debug-modules-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-debug-modules-extra-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-debuginfo-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-debuginfo-common-x86_64-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-devel-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-modules-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-modules-extra-0:4.18.0-553.167.1.rt7.508.el8_10.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
A flaw was found in the Linux kernel's mac802154 (IEEE 802.15.4 MAC security) component. This vulnerability allows for data corruption and potential kernel crashes when cryptographic transformations are performed on shared network packet data without proper isolation. A remote attacker could exploit this by sending specific 802.15.4 traffic, leading to system instability or denial of service.
7.0 (High)
Affected products
Fixed
30 products, the same list as for
CVE-2026-43370
Threats
Impact
Important
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.
7.8 (High)
Affected products
Fixed
30 products, the same list as for
CVE-2026-43370
Threats
Impact
Important
A flaw was found in the Linux kernel's Sound Open Firmware (SOF) subsystem, specifically within the `ipc3-control` component. This vulnerability occurs in the `snd_sof_update_control()` function where the size of firmware-provided data is not properly validated against the allocated buffer size. An attacker could exploit this by providing a malformed size, leading to a buffer overflow. This could result in memory corruption, potentially causing system instability or a denial of service.
7.0 (High)
Affected products
Fixed
30 products, the same list as for
CVE-2026-43370
Threats
Impact
Moderate
A flaw was found in the Linux kernel's xfrm subsystem, specifically within the AH6 (Authentication Header for IPv6) module. The `ipv6_rearrange_rthdr()` function does not properly validate the `segments_left` field in routing headers when processing raw IPv6 HDRINCL packets. This oversight allows an attacker to craft a malicious packet that can cause an out-of-bounds memory access, potentially leading to memory corruption.
8.3 (High)
Affected products
Fixed
30 products, the same list as for
CVE-2026-43370
Threats
Impact
Important
A flaw was found in the Linux kernel's TUN/TAP driver. An integer underflow vulnerability exists in the tun_get_user() function when processing oversized headroom requests. This can occur if Open vSwitch (OVS) propagates an excessively large headroom request to the TUN or TAP device. Successful exploitation could lead to memory corruption, where network packet data is written outside its intended buffer, potentially causing a denial of service or other system instability.
7.8 (High)
Affected products
Fixed
30 products, the same list as for
CVE-2026-43370
Threats
Impact
Important
A flaw was found in the Linux kernel's `scsi: qla2xxx` driver. A remote attacker, by sending a specially crafted Fibre Channel Protocol (FCP) response, could cause an integer underflow. This underflow leads to an out-of-bounds read when handling sense data, potentially disclosing sensitive memory information from the kernel's heap.
7.1 (High)
Affected products
Fixed
30 products, the same list as for
CVE-2026-43370
Threats
Impact
Important
References
46 references
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"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.",
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{
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"title": "Vulnerability description"
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"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.",
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"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
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"title": "kernel: scsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read"
}
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}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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.
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.
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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.
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