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ALSA-2026:1617 — 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 64 more

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

Security Fix(es):

* kernel: net/sched: mqprio: fix stack out-of-bounds write in tc entry parsing (CVE-2025-38568) * kernel: ASoC: Intel: bytcr_rt5640: Fix invalid quirk input mapping (CVE-2025-40154) * kernel: devlink: rate: Unset parent pointer in devl_rate_nodes_destroy (CVE-2025-40251)

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:2025-15801

BELL-CVE-2025-38568

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

certfr-2025-avi-0787 — De multiples vulnérabilités ont été découvertes dans le noyau Linux de SUSE. Certaines d'entre elles permettent à un at…

certfr-2025-avi-0787

EUVD-2026-347100

fkie_cve-2025-38568

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

net/sched: mqprio: fix stack out-of-bounds write in tc entry parsing

TCA_MQPRIO_TC_ENTRY_INDEX is validated using NLA_POLICY_MAX(NLA_U32, TC_QOPT_MAX_QUEUE), which allows the value TC_QOPT_MAX_QUEUE (16). This leads to a 4-byte out-of-bounds stack write in the fp[] array, which only has room for 16 elements (0–15).

Fix this by changing the policy to allow only up to TC_QOPT_MAX_QUEUE - 1.

GHSA-4rpm-cvm4-wfmq

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

net/sched: mqprio: fix stack out-of-bounds write in tc entry parsing

Fix this by changing the policy to allow only up to TC_QOPT_MAX_QUEUE - 1.

msrc_CVE-2025-38568 — net/sched: mqprio: fix stack out-of-bounds write in tc entry parsing

msrc_CVE-2025-38568

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

Security update for the Linux Kernel

RHSA-2026:1727 — Red Hat Security Advisory: kernel security update

kernel: Linux kernel: Information disclosure and denial of service in ntb_hw_switchtec module kernel: Linux kernel erofs: Use-After-Free due to device type mismatch kernel: io_uring/msg_ring: ensure io_kiocb freeing is deferred for RCU kernel: net/sched: mqprio: fix stack out-of-bounds write in tc entry parsing kernel: smb: client: let recv_done verify data_offset, data_length and remaining_data_length kernel: io_uring/waitid: always prune wait queue entry in io_waitid_wait() kernel: mptcp: Use __sk_dst_get() and dst_dev_rcu() in mptcp_active_enable() kernel: sctp: avoid NULL dereference when chunk data buffer is missing kernel: Linux kernel: vsock vulnerability may lead to memory corruption kernel: devlink: rate: Unset parent pointer in devl_rate_nodes_destroy kernel: mptcp: fix race condition in mptcp_schedule_work() kernel: Linux kernel: Information disclosure and denial of service in Bluetooth HCI event handling kernel: Linux kernel: Out-of-bounds write in fbdev can lead to privilege escalation, information disclosure, or denial of service. kernel: Bluetooth: hci_sync: fix race in hci_cmd_sync_dequeue_once kernel: Linux kernel: Information disclosure and denial of service via out-of-bounds read in font glyph handling kernel: net: atlantic: fix fragment overflow handling in RX path

SUSE-SU-2025:03272-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

UBUNTU-CVE-2025-38568

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:18.04:LTS: linux-azure, Ubuntu:18.04:LTS: linux-azure-5.3, Ubuntu:18.04:LTS: linux-azure-edge, Ubuntu:18.04:LTS: linux-gcp, Ubuntu:18.04:LTS: linux-gcp-5.3, Ubuntu:18.04:LTS: linux-gke-4.15, Ubuntu:18.04:LTS: linux-gke-5.4 and 123 more

In the Linux kernel, the following vulnerability has been resolved: net/sched: mqprio: fix stack out-of-bounds write in tc entry parsing TCA_MQPRIO_TC_ENTRY_INDEX is validated using NLA_POLICY_MAX(NLA_U32, TC_QOPT_MAX_QUEUE), which allows the value TC_QOPT_MAX_QUEUE (16). This leads to a 4-byte out-of-bounds stack write in the fp[] array, which only has room for 16 elements (0–15). Fix this by changing the policy to allow only up to TC_QOPT_MAX_QUEUE - 1.

WID-SEC-W-2025-1869 — Linux Kernel: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen im Linux-Kernel ausnutzen, um einen Denial-of-Service-Zustand zu erzeugen oder andere nicht spezifizierte Angriffe durchzuführen.