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ALSA-2025:17760 — Moderate: kernel security update

Affected: AlmaLinux:9: kernel, AlmaLinux:9: kernel-64k, AlmaLinux:9: kernel-64k-core, AlmaLinux:9: kernel-64k-debug, AlmaLinux:9: kernel-64k-debug-core, AlmaLinux:9: kernel-64k-debug-devel, AlmaLinux:9: kernel-64k-debug-devel-matched, AlmaLinux:9: kernel-64k-debug-modules, AlmaLinux:9: kernel-64k-debug-modules-core, AlmaLinux:9: kernel-64k-debug-modules-extra and 66 more

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

* kernel: HID: core: Harden s32ton() against conversion to 0 bits (CVE-2025-38556) * kernel: eventpoll: Fix semi-unbounded recursion (CVE-2025-38614) * kernel: ALSA: usb-audio: Validate UAC3 cluster segment descriptors (CVE-2025-39757) * kernel: crypto: seqiv - Handle EBUSY correctly (CVE-2023-53373)

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:2025-15543

BELL-CVE-2025-39757

Affected: Alpaquita:23: linux-lts, Alpaquita:25: linux-lts, Alpaquita:stream: linux-lts

certfr-2025-avi-0825 — De multiples vulnérabilités ont été découvertes dans le noyau Linux de Debian. Elles permettent à un attaquant de provo…

certfr-2025-avi-0825

EUVD-2026-326716

fkie_cve-2025-39757

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

ALSA: usb-audio: Validate UAC3 cluster segment descriptors

UAC3 class segment descriptors need to be verified whether their sizes match with the declared lengths and whether they fit with the allocated buffer sizes, too. Otherwise malicious firmware may lead to the unexpected OOB accesses.

GHSA-jrpg-g4vf-p4hw

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

ALSA: usb-audio: Validate UAC3 cluster segment descriptors

ICSA-26-134-10 — Siemens SIMATIC

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Check link_res->hpo_dp_link_enc before using it [WHAT & HOW] Functions dp_enable_link_phy and dp_disable_link_phy can pass link_res without initializing hpo_dp_link_enc and it is necessary to check for null before dereferencing. This fixes 2 FORWARD_NULL issues reported by Coverity. In the Linux kernel, the following vulnerability has been resolved:

fs: relax assertions on failure to encode file handles

Encoding file handles is usually performed by a filesystem >encode_fh() method that may fail for various reasons.

The legacy users of exportfs_encode_fh(), namely, nfsd and name_to_handle_at(2) syscall are ready to cope with the possibility of failure to encode a file handle.

There are a few other users of exportfs_encode_{fh,fid}() that currently have a WARN_ON() assertion when ->encode_fh() fails. Relax those assertions because they are wrong.

The second linked bug report states commit 16aac5ad1fa9 ("ovl: support encoding non-decodable file handles") in v6.6 as the regressing commit, but this is not accurate.

The aforementioned commit only increases the chances of the assertion and allows triggering the assertion with the reproducer using overlayfs, inotify and drop_caches.

Triggering this assertion was always possible with other filesystems and other reasons of ->encode_fh() failures and more particularly, it was also possible with the exact same reproducer using overlay…

msrc_CVE-2025-39757 — ALSA: usb-audio: Validate UAC3 cluster segment descriptors

msrc_CVE-2025-39757

NCSC-2026-0147 — Kwetsbaarheden verholpen in Siemens-producten

NCSC-2026-0147

OESA-2025-2698 — kernel security update

Affected: openEuler:22.03-LTS-SP3: kernel

The Linux Kernel, the operating system core itself. Security Fix(es):

In the Linux kernel, the following vulnerability has been resolved:ntb_hw_switchtec: Fix shift-out-of-bounds in switchtec_ntb_mw_set_transThere is a kernel API ntb_mw_clear_trans() would pass 0 to both addr andsize. This would make xlate_pos negative.[ 23.734156] switchtec switchtec0: MW 0: part 0 addr 0x0000000000000000 size 0x0000000000000000[ 23.734158] ================================================================================[ 23.734172] UBSAN: shift-out-of-bounds in drivers/ntb/hw/mscc/ntb_hw_switchtec.c:293:7[ 23.734418] shift exponent -1 is negativeEnsuring xlate_pos is a positive or zero before BIT.(CVE-2023-53034)

In the Linux kernel, the following vulnerability has been resolved:slimbus: messaging: Free transaction ID in delayed interrupt scenarioIn case of interrupt delay for any reason, slim_do_transfer()returns timeout error but the transaction ID (TID) is not freed.This results into invalid memory access insideqcom_slim_ngd_rx_msgq_cb() due to invalid TID.Fix the issue by freeing the TID in slim_do_transfer() beforereturning timeout error to avoid invalid memory access.Call trace:__memcpy_fromio+0x20/0x190qcom_slim_ngd_rx_msgq_cb+0x130/0x290 [slim_qcom_ngd_ctrl]vchan_complete+0x2a0/0x4a0tasklet_action_common+0x274/0x700tasklet_action+0x28/0x3c_stext+0x188/0x620run_ksoftirqd+0x34/0x74smpboot_thread_fn+0x1d8/0x464kthread+0x178/0x238ret_from_fork+0x10/0x20Code: aa0003e8 910004…

openSUSE-SU-2025:20081-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

RHSA-2025:17776 — Red Hat Security Advisory: kernel security update

kernel: HID: core: Harden s32ton() against conversion to 0 bits kernel: ALSA: usb-audio: Validate UAC3 cluster segment descriptors kernel: wifi: ath12k: Decrement TID on RX peer frag setup error handling

SSA-032379 — SSA-032379: Multiple Vulnerabilities in SIMATIC CN 4100 Before V5.0

fs: relax assertions on failure to encode file handles

Encoding file handles is usually performed by a filesystem >encode_fh() method that may fail for various reasons.

The legacy users of exportfs_encode_fh(), namely, nfsd and name_to_handle_at(2) syscall are ready to cope with the possibility of failure to encode a file handle.

There are a few other users of exportfs_encode_{fh,fid}() that currently have a WARN_ON() assertion when ->encode_fh() fails. Relax those assertions because they are wrong.

The second linked bug report states commit 16aac5ad1fa9 ("ovl: support encoding non-decodable file handles") in v6.6 as the regressing commit, but this is not accurate.

The aforementioned commit only increases the chances of the assertion and allows triggering the assertion with the reproducer using overlayfs, inotify and drop_caches.

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

Security update for the Linux Kernel

UBUNTU-CVE-2025-39757

Affected: Ubuntu:16.04:LTS: linux-hwe-edge, Ubuntu:18.04:LTS: linux-aws-5.0, Ubuntu:18.04:LTS: linux-aws-5.3, Ubuntu:Pro:18.04:LTS: linux-aws-5.4, Ubuntu:18.04:LTS: linux-azure, Ubuntu:18.04:LTS: linux-azure-5.3, Ubuntu:Pro:18.04:LTS: linux-azure-5.4, Ubuntu:18.04:LTS: linux-azure-edge, Ubuntu:18.04:LTS: linux-gcp, Ubuntu:18.04:LTS: linux-gcp-5.3 and 188 more

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Validate UAC3 cluster segment descriptors UAC3 class segment descriptors need to be verified whether their sizes match with the declared lengths and whether they fit with the allocated buffer sizes, too. Otherwise malicious firmware may lead to the unexpected OOB accesses.

WID-SEC-W-2025-2040 — Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Linux Kernel ausnutzen, um Sicherheitsmechanismen zu umgehen, sowie einen Denial of Service Angriff oder andere nicht spezifizierte Angriffe durchzuführen.