RHSA-2026:62642 - Security Advisory

Topic

An update for kpatch-patch-6_12_0-211_16_1 is now available for Red Hat Enterprise Linux 10.

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

This is a kernel live patch module which can be loaded by the kpatch command line utility to modify the code of a running kernel. This patch module is targeted for kernel-6.12.0-211.16.1.el10_2.

Security Fix(es):

• kernel: netfilter: nft_set_pipapo_avx2: don't return non-matching entry on expiry (CVE-2026-43114)
• kernel: fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath (CVE-2026-43112)
• kernel: Linux kernel: Use-After-Free in net/gro due to improper handling of zerocopy skbs (CVE-2026-46323)
• kernel: futex: Drop CLONE_THREAD requirement for private default hash alloc (CVE-2026-52973)
• kernel: net/sched: act_api: use RCU with deferred freeing for action lifecycle (CVE-2026-53264)

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 10 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 10.2 x86_64
• Red Hat Enterprise Linux for Power, little endian 10 ppc64le
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 10.2 ppc64le
• Red Hat Enterprise Linux for Power, little endian - 4 years of support 10.2 ppc64le
• Red Hat Enterprise Linux for x86_64 - 4 years of updates 10.2 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 10.2 x86_64
• Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 10.2 ppc64le

Fixes

• BZ - 2466994 - CVE-2026-43114 kernel: netfilter: nft_set_pipapo_avx2: don't return non-matching entry on expiry
• BZ - 2467015 - CVE-2026-43112 kernel: fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath
• BZ - 2479832 - CVE-2026-46323 kernel: Linux kernel: Use-After-Free in net/gro due to improper handling of zerocopy skbs
• BZ - 2492413 - CVE-2026-52973 kernel: futex: Drop CLONE_THREAD requirement for private default hash alloc
• BZ - 2492851 - CVE-2026-53264 kernel: net/sched: act_api: use RCU with deferred freeing for action lifecycle

CVEs

• CVE-2026-43112
• CVE-2026-43114
• CVE-2026-46323
• CVE-2026-52973
• CVE-2026-53264

References

• https://access.redhat.com/security/updates/classification/#important