RHSA-2026:80908 — Security Advisory

Red Hat Security Advisory: kernel security update

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Severity

Important

Red Hat Product Security

RHEL 9

Products

Official CSAF product identity

Published · October 13, 2026

Updated · November 2, 2026

Topic

An update for kernel is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions.

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: xfrm: hold dev ref until after transport_finish NF_HOOK (CVE-2026-31663)
kernel: xfrm: policy: fix use-after-free on inexact bin in xfrm_policy_bysel_ctx() (CVE-2026-53239)
kernel: ip6: vti: Use ip6_tnl.net in vti6_siocdevprivate() (CVE-2026-63921)
kernel: xfrm: input: hold netns during deferred transport reinjection (CVE-2026-63919)
kernel: ip6: vti: Use ip6_tnl.net in vti6_changelink() (CVE-2026-63917)
kernel: xfrm: fix stale skb->prev after async crypto steals a GSO segment (CVE-2026-68426)
kernel: nvmet-auth: reject short AUTH_RECEIVE buffers (CVE-2026-72130)
kernel: udp: fix potential use-after-free in tunnel segmentation (CVE-2026-74705)

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.