RHSA-2026:38491 — Security Advisory

Red Hat Security Advisory: kernel security, bug fix, and enhancement update

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Severity

Important

Red Hat Product Security

RHEL 9

Products

Official CSAF product identity

Published · July 13, 2026

Updated · November 4, 2026

Topic

An update for kernel is now available for Red Hat Enterprise Linux 9.

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.

Description

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

kernel: Linux kernel: Memory leak in networking due to incorrect GRO packet handling (CVE-2026-22979)
kernel: rtmutex: Use waiter::task instead of current in remove_waiter() (CVE-2026-43499)
kernel: net: bridge: use a stable FDB dst snapshot in RCU readers (CVE-2026-46086)
kernel: crypto: ccp - copy IV using skcipher ivsize (CVE-2026-53016)
kernel: futex/requeue: Prevent NULL pointer dereference in remove_waiter() on self-deadlock (CVE-2026-53166)

Bug Fix(es) and Enhancement(s):

Kernel panic very early during boot while reading a tracefs file (available_filter_functions) due to invalid module name pointer [9.8.z] (JIRA:RHEL-183236)

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.