RHSA-2025:22910 — Security Advisory

Red Hat Security Advisory: kernel security update

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Severity

Moderate

Red Hat Product Security

RHEL 7

Products

Official CSAF product identity

Published · December 9, 2025

Updated · November 1, 2026

Topic

An update for kernel is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support.

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: use after free flaw in l2cap_conn_del in net/bluetooth/l2cap_core.c (CVE-2022-3640)
kernel: sctp: linearize cloned gso packets in sctp_rcv (CVE-2025-38718)
kernel: Bluetooth: L2CAP: Fix use-after-free (CVE-2023-53305)
kernel: cifs: fix oops during encryption (CVE-2022-50341)
kernel: ip6mr: Fix skb_under_panic in ip6mr_cache_report() (CVE-2023-53365)
kernel: Bluetooth: L2CAP: Fix user-after-free (CVE-2022-50386)
kernel: wifi: brcmfmac: fix use-after-free bug in brcmf_netdev_start_xmit() (CVE-2022-50408)

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.