RHSA-2026:87375 — Security Advisory

Red Hat Security Advisory: kernel security update

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Severity

Important

Red Hat Product Security

RHEL 8

Products

Official CSAF product identity

Published · October 22, 2026

Updated · November 4, 2026

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.

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: ipv4: raw: reject IP_HDRINCL packets with ihl < 5 (CVE-2026-64114)
kernel: fuse: re-lock request before returning from fuse_ref_folio() (CVE-2026-64266)
kernel: ipv4: fib: free fib_alias with kfree_rcu() on insert error path (CVE-2026-64572)
kernel: ALSA: seq: close a re-opened queue timer in the destructor (CVE-2026-68202)
kernel: xfs: bounds-check buffer log item's dirty bitmap (CVE-2026-80536)
kernel: inet: frags: strip GSO state from fragments before reassembly (CVE-2026-80590)
kernel: vfio/pci: clear vdev->msi_perm after freeing it on init failure (CVE-2026-89777)

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.