RHSA-2026:2264 — Security Advisory

Red Hat Security Advisory: kernel security update

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Severity

Moderate

Red Hat Product Security

RHEL 8

Products

Official CSAF product identity

Published · February 9, 2026

Updated · October 30, 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 Moderate. 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: vsock/vmci: Clear the vmci transport packet properly when initializing it (CVE-2025-38403)
kernel: net: use dst_dev_rcu() in sk_setup_caps() (CVE-2025-40170)
kernel: ipv6: use RCU in ip6_xmit() (CVE-2025-40135)
kernel: ipv6: use RCU in ip6_output() (CVE-2025-40158)
kernel: Linux kernel ALSA USB audio driver: Buffer overflow leading to information disclosure and denial of service (CVE-2025-40269)
kernel: ext4: fix use-after-free in ext4_orphan_cleanup (CVE-2022-50673)
kernel: NFSv4/pNFS: Clear NFS_INO_LAYOUTCOMMIT in pnfs_mark_layout_stateid_invalid (CVE-2025-68349)
kernel: nvme-tcp: fix NULL pointer dereferences in nvmet_tcp_build_pdu_iovec (CVE-2026-22998)

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.