Red Hat alert RHSA-2025:23445-01 (kernel)

An update for kernel is now available for Red Hat Enterprise Linux 8.2
Advanced Update Support.

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: ALSA: usb-audio: ALSA USB Audio Out-of-Bounds Bug (CVE-2022-48701)

* 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: NFS: Fix a race when updating an existing write (CVE-2025-39697)

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

* kernel: wifi: brcmfmac: slab-out-of-bounds read in brcmf_get_assoc_ies()
(CVE-2023-53213)

* kernel: mm: fix zswap writeback race condition (CVE-2023-53178)

* 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: smb: client: fix race with concurrent opens in rename(2)
(CVE-2025-39825)

* kernel: efivarfs: Fix slab-out-of-bounds in efivarfs_d_compare
(CVE-2025-39817)

* kernel: Bluetooth: L2CAP: Fix use-after-free (CVE-2023-53305)

* kernel: fs: fix UAF/GPF bug in nilfs_mdt_destroy (CVE-2022-50367)

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

* kernel: net: sched: sfb: fix null pointer access issue when sfb_init()
fails (CVE-2022-50356)

* kernel: skbuff: skb_segment, Call zero copy functions before using skbuff
frags (CVE-2023-53354)

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

* kernel: crypto: seqiv - Handle EBUSY correctly (CVE-2023-53373)

* kernel: Bluetooth: L2CAP: Fix user-after-free (CVE-2022-50386)

* kernel: ext4: fix undefined behavior in bit shift for
ext4_check_flag_values (CVE-2022-50403)

* kernel: wifi: brcmfmac: fix use-after-free bug in brcmf_netdev_start_xmit()
(CVE-2022-50408)

* kernel: NFSD: Protect against send buffer overflow in NFSv2 READ
(CVE-2022-50410)

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

* kernel: wifi: cfg80211: fix use-after-free in cmp_bss() (CVE-2025-39864)

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

* kernel: mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when
unpoison memory (CVE-2025-39883)

* kernel: NFSD: Avoid calling OPDESC() with ops->opnum == OP_ILLEGAL
(CVE-2023-53680)

* 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.

This content is licensed under the Creative Commons Attribution 4.0
International License (https://creativecommons.org/licenses/by/4.0/). If you
distribute this content, or a modified version of it, you must provide
attribution to Red Hat Inc. and provide a link to the original.

Original: https://access.redhat.com/security/data/csaf/v2/advisories/2025/rhsa-2025_23445.json