RHSA-2025:23463 - Security Advisory

Topic

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.

Description

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

The system must be rebooted for this update to take effect.

Affected Products

• Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension 8.4 x86_64
• Red Hat Enterprise Linux Server - AUS 8.4 x86_64

Fixes

• BZ - 2312067 - CVE-2024-46679 kernel: ethtool: check device is present when getting link settings
• BZ - 2393164 - CVE-2025-38729 kernel: ALSA: usb-audio: Validate UAC3 power domain descriptors, too
• BZ - 2393166 - CVE-2025-38718 kernel: sctp: linearize cloned gso packets in sctp_rcv
• BZ - 2393172 - CVE-2025-38724 kernel: nfsd: handle get_client_locked() failure in nfsd4_setclientid_confirm()
• BZ - 2394615 - CVE-2025-39757 kernel: ALSA: usb-audio: Validate UAC3 cluster segment descriptors
• BZ - 2395420 - CVE-2023-53226 kernel: wifi: mwifiex: Fix OOB and integer underflow when rx packets
• BZ - 2395681 - CVE-2023-53297 kernel: Bluetooth: L2CAP: fix "bad unlock balance" in l2cap_disconnect_rsp
• BZ - 2395891 - CVE-2023-53322 kernel: scsi: qla2xxx: Wait for io return on terminate rport
• BZ - 2396130 - CVE-2023-53365 kernel: ip6mr: Fix skb_under_panic in ip6mr_cache_report()
• BZ - 2396376 - CVE-2023-53393 kernel: RDMA/mlx5: Fix mlx5_ib_get_hw_stats when used for device
• BZ - 2396538 - CVE-2022-50406 kernel: iomap: iomap: fix memory corruption when recording errors during writeback
• BZ - 2396944 - CVE-2025-39841 kernel: scsi: lpfc: Fix buffer free/clear order in deferred receive path
• BZ - 2402699 - CVE-2025-39955 kernel: tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect()
• BZ - 2414724 - CVE-2025-40186 kernel: tcp: Don't call reqsk_fastopen_remove() in tcp_conn_request()

CVEs

• CVE-2022-50406
• CVE-2023-53226
• CVE-2023-53297
• CVE-2023-53322
• CVE-2023-53365
• CVE-2023-53393
• CVE-2024-46679
• CVE-2025-38718
• CVE-2025-38724
• CVE-2025-38729
• CVE-2025-39757
• CVE-2025-39841
• CVE-2025-39955
• CVE-2025-40186

References

• https://access.redhat.com/security/updates/classification/#important