RHSA-2025:16880 — Security Advisory

Red Hat Security Advisory: kernel security update

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Severity

Moderate

Red Hat Product Security

RHEL 9

Products

Official CSAF product identity

Published · September 29, 2025

Updated · October 30, 2026

Topic

An update for kernel is now available for Red Hat Enterprise Linux 9.

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: netfilter: nf_conntrack: fix crash due to removal of uninitialised entry (CVE-2025-38472)
kernel: smb: client: fix use-after-free in cifs_oplock_break (CVE-2025-38527)
kernel: sctp: linearize cloned gso packets in sctp_rcv (CVE-2025-38718)
kernel: tls: fix handling of zero-length records on the rx_list (CVE-2025-39682)
kernel: io_uring/futex: ensure io_futex_wait() cleans up properly on failure (CVE-2025-39698)

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.