RHSA-2026:91650 — Security Advisory

An update for multiple packages 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.

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-5.14.0-687.10.1.el9_8.

Security Fix(es):

• kernel: netfilter: ebtables SNAT target writes to shared memory pages during ARP hardware address rewrite (CVE-2026-53266)

• kernel: pppoe: reload header pointer after dev_hard_header() (CVE-2026-68121)

• kernel: net: bridge: stop fast-leave after deleting a port group (CVE-2026-74480)

• kernel: packet: use consistent hard_header_len in non-ring send paths (CVE-2026-74582)

• kernel: xfrm: ah6: validate routing header segments_left (CVE-2026-80844)

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.