RHSA-2025:23463 — Security Advisory

An update for kernel is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On.

Red Hat Product Security has rated this update as having a security impact of Important. 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.

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

Security Fix(es):

• kernel: ethtool: check device is present when getting link settings (CVE-2024-46679)

• kernel: ALSA: usb-audio: Validate UAC3 power domain descriptors, too (CVE-2025-38729)

• kernel: sctp: linearize cloned gso packets in sctp_rcv (CVE-2025-38718)

• kernel: nfsd: handle get_client_locked() failure in nfsd4_setclientid_confirm() (CVE-2025-38724)

• kernel: ALSA: usb-audio: Validate UAC3 cluster segment descriptors (CVE-2025-39757)

• kernel: wifi: mwifiex: Fix OOB and integer underflow when rx packets (CVE-2023-53226)

• kernel: Bluetooth: L2CAP: fix "bad unlock balance" in l2cap_disconnect_rsp (CVE-2023-53297)

• kernel: scsi: qla2xxx: Wait for io return on terminate rport (CVE-2023-53322)

• kernel: ip6mr: Fix skb_under_panic in ip6mr_cache_report() (CVE-2023-53365)

• kernel: RDMA/mlx5: Fix mlx5_ib_get_hw_stats when used for device (CVE-2023-53393)

• kernel: iomap: iomap: fix memory corruption when recording errors during writeback (CVE-2022-50406)

• kernel: scsi: lpfc: Fix buffer free/clear order in deferred receive path (CVE-2025-39841)

• kernel: tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect() (CVE-2025-39955)

• kernel: tcp: Don't call reqsk_fastopen_remove() in tcp_conn_request() (CVE-2025-40186)

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.