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ALSA-2025:19440 — Moderate: kernel-rt security update

Affected: AlmaLinux:8: kernel-rt, AlmaLinux:8: kernel-rt-core, AlmaLinux:8: kernel-rt-debug, AlmaLinux:8: kernel-rt-debug-core, AlmaLinux:8: kernel-rt-debug-devel, AlmaLinux:8: kernel-rt-debug-modules, AlmaLinux:8: kernel-rt-debug-modules-extra, AlmaLinux:8: kernel-rt-devel, AlmaLinux:8: kernel-rt-modules, AlmaLinux:8: kernel-rt-modules-extra

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

* kernel: wifi: mac80211: check S1G action frame size (CVE-2023-53257) * kernel: wifi: mwifiex: Fix OOB and integer underflow when rx packets (CVE-2023-53226) * kernel: wifi: cfg80211: fix use-after-free in cmp_bss() (CVE-2025-39864)

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.

bdu:2026-02189

BELL-CVE-2023-53257

Affected: Alpaquita:23: linux-lts, Alpaquita:stream: linux-lts

certfr-2025-avi-0895 — De multiples vulnérabilités ont été découvertes dans le noyau Linux de SUSE. Certaines d'entre elles permettent à un at…

certfr-2025-avi-0895

EUVD-2026-345170

fkie_cve-2023-53257

In the Linux kernel, the following vulnerability has been resolved:

wifi: mac80211: check S1G action frame size

Before checking the action code, check that it even exists in the frame.

GHSA-5qfv-wj98-fqxv

In the Linux kernel, the following vulnerability has been resolved:

wifi: mac80211: check S1G action frame size

Before checking the action code, check that it even exists in the frame.

RHSA-2025:19440 — Red Hat Security Advisory: kernel-rt security update

kernel: wifi: mwifiex: Fix OOB and integer underflow when rx packets kernel: wifi: mac80211: check S1G action frame size kernel: wifi: cfg80211: fix use-after-free in cmp_bss()

RHSA-2025:19447 — Red Hat Security Advisory: kernel security update

kernel: cifs: Fix xid leak in cifs_ses_add_channel() kernel: wifi: mwifiex: Fix OOB and integer underflow when rx packets kernel: wifi: mac80211: check S1G action frame size kernel: Linux kernel (CIFS): Use-after-free vulnerability allows data integrity compromise and denial of service kernel: wifi: cfg80211: fix use-after-free in cmp_bss()

SUSE-SU-2025:03600-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

UBUNTU-CVE-2023-53257

Affected: Ubuntu:Pro:14.04:LTS: linux, Ubuntu:Pro:14.04:LTS: linux-aws, Ubuntu:Pro:14.04:LTS: linux-azure, Ubuntu:Pro:14.04:LTS: linux-lts-xenial, Ubuntu:Pro:16.04:LTS: linux, Ubuntu:Pro:16.04:LTS: linux-aws, Ubuntu:Pro:16.04:LTS: linux-aws-hwe, Ubuntu:Pro:16.04:LTS: linux-azure, Ubuntu:Pro:16.04:LTS: linux-gcp, Ubuntu:Pro:16.04:LTS: linux-hwe and 169 more

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: check S1G action frame size Before checking the action code, check that it even exists in the frame.

WID-SEC-W-2025-2053 — Linux Kernel: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen oder nicht näher beschriebene Auswirkungen zu erzielen.