RHSA-2026:72059 - Security Advisory

Topic

An update for kernel is now available for NVIDIA for RHEL 10.

Red Hat Product Security has rated this update as having a security impact of Critical. 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: crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg (CVE-2025-39964)
• kernel: netfilter: ebtables SNAT target writes to shared memory pages during ARP hardware address rewrite (CVE-2026-53266)
• kernel: net: ipv6: use-after-free in fib6_rule_suppress due to stale res->rt6 pointer (CVE-2026-74581)

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.

Additional Changes:

For detailed information on changes in this release, see the NVIDIA for RHEL 10 Release Notes linked from 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

The system must be rebooted for this update to take effect.

Red Hat recommends treating all kernel errata as security-relevant. Given the kernel's fundamental role, any bug has a higher chance of impacting system security, even if that impact only becomes clear after a fix is published. Therefore, Red Hat prioritizes delivering fixes that improve our customers' overall security posture.

Because of this proactive approach, a patch may be associated with a CVE assignment at a future date. Retroactive CVE assignments are always documented in the corresponding errata and on Red Hat's CVE pages. We strongly advise against delaying updates, as doing so may leave your system exposed when protections are already available.

Affected Products

• Red Hat Enterprise Linux for ARM 64 10 aarch64

Fixes

• BZ - 2403545 - CVE-2025-39964 kernel: crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg
• BZ - 2485368 - CVE-2026-53266 kernel: netfilter: ebtables SNAT target writes to shared memory pages during ARP hardware address rewrite
• BZ - 2520980 - CVE-2026-74581 kernel: net: ipv6: use-after-free in fib6_rule_suppress due to stale res->rt6 pointer

CVEs

• CVE-2025-39964
• CVE-2026-53266
• CVE-2026-74581

References

• https://access.redhat.com/security/updates/classification/#critical
• https://docs.redhat.com/en/documentation/red_hat_enterprise_linux_for_nvidia/26.01/html/26.01_release_notes/index