RHSA-2026:83157 — Security Advisory

Red Hat Security Advisory: kernel security, bug fix, and enhancement update

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Severity

Important

Red Hat Product Security

RHEL 8

Products

Official CSAF product identity

Published · October 15, 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: Linux kernel: Denial of Service due to use-after-free in act_tunnel_key (CVE-2026-68377)
kernel: ASoC: SOF: ipc3-control: Fix heap overflow in bytes_ext put/get (CVE-2026-72262)
kernel: net/sched: cls_route: fix fastmap use-after-free on filter (CVE-2026-74583)
kernel: ALSA: usx2y: bound the hwdep mmap fault offset (CVE-2026-74641)
kernel: udp: fix potential use-after-free in tunnel segmentation (CVE-2026-74705)
kernel: svcrdma: Validate Read chunk positions before reconstruction (CVE-2026-89526)
kernel: NFSD: Prevent client use-after-free during blocked-lock reaping (CVE-2026-90036)
kernel: svcrdma: Reject Write/Reply chunks with segcount 0 (CVE-2026-93228)
kernel: md/raid5-ppl: fix use-after-free in ppl_do_flush() (CVE-2026-93262)

Bug Fix(es) and Enhancement(s):

powerpc/pseries: pci - logic bug in SR-IOV enable (JIRA:RHEL-240146)

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.