# Red Hat patches dozens of Linux kernel flaws

Published: 2026-10-16 · Severity: routine
Canonical: https://vorant.io/reports/a7df11e5-a975-5989-9149-d86e069bbb13/red-hat-patches-dozens-of-linux-kernel-flaws
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> Red Hat issued multiple RHSA bulletins fixing numerous Linux kernel vulnerabilities enabling remote code execution, privilege escalation, and denial of service.

Source: cert.ssi.gouv.fr — https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-1334

## What to check

- Applies to: The 40 CVEs named below. Whether you run an affected version is not assessed: check the versions the source lists.
- Exploitation: No exploitation in the wild and no public exploit is recorded for the CVEs named.

CERT-FR relayed a Red Hat security advisory covering a large batch of Linux kernel vulnerabilities affecting Red Hat Enterprise Linux (RHEL) versions 7 through 10 and their CodeReady Builder variants, across x86_64, aarch64, s390x (IBM z Systems), and ppc64le (IBM Power) architectures. The issues span a wide range of kernel subsystems and collectively allow data integrity and confidentiality compromise, security policy bypass, remote denial of service, remote arbitrary code execution, and privilege escalation, according to Red Hat's own classification. No proof-of-concept exploitation or in-the-wild attack activity is mentioned in the advisory.

The fixes are distributed across twelve separate RHSA errata (RHSA-2026:79786, 81349, 81371, 81406, 81552, 82806, 82807, 82860, 83156, 83157, 83159, 83207) published between October 9 and October 14, 2026, and reference over fifty individual CVEs. Affected products include standard RHEL subscriptions, Extended Update Support (EUS), Extended Life Cycle (ELS), Update Services for SAP Solutions, and Real Time kernel variants, indicating broad exposure across RHEL's full support matrix including long-term and SAP-specific deployments.

Defenders running any RHEL 7/8/9/10 kernel builds (including EUS, ELS, SAP, Real Time, and Power/z Systems variants) should apply the referenced RHSA kernel updates per their subscription channel. As this is a patch rollup with no evidence of active exploitation, prioritization should follow standard kernel-patching cadence, with particular attention to systems exposed to untrusted local users (privilege escalation risk) or network-facing kernel components (DoS/RCE risk).

## Mentioned in this report

- Vulnerabilities: CVE-2026-31663, CVE-2026-31678, CVE-2026-43332, CVE-2026-45859, CVE-2026-46309, CVE-2026-46319, CVE-2026-53002, CVE-2026-53011, CVE-2026-53239, CVE-2026-63899, CVE-2026-63917, CVE-2026-63919, CVE-2026-63920, CVE-2026-63921, CVE-2026-63925, CVE-2026-63974, CVE-2026-64007, CVE-2026-64030, CVE-2026-64032, CVE-2026-64162, CVE-2026-64191, CVE-2026-64385, CVE-2026-64507, CVE-2026-64508, CVE-2026-68108, CVE-2026-68123, CVE-2026-68140, CVE-2026-68236, CVE-2026-68245, CVE-2026-68278, CVE-2026-68377, CVE-2026-68404, CVE-2026-68409, CVE-2026-68426, CVE-2026-72130, CVE-2026-72262, CVE-2026-72288, CVE-2026-72289, CVE-2026-72318, CVE-2026-72320

Source reporting: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-1334

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