RHSA-2025:23445 - Security Advisory

Topic

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.

Description

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.

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 Server - AUS 8.2 x86_64

Fixes

• BZ - 2278950 - CVE-2022-48701 kernel: ALSA: usb-audio: ALSA USB Audio Out-of-Bounds Bug
• 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 - 2393481 - CVE-2025-39697 kernel: NFS: Fix a race when updating an existing write
• BZ - 2394615 - CVE-2025-39757 kernel: ALSA: usb-audio: Validate UAC3 cluster segment descriptors
• BZ - 2395267 - CVE-2023-53213 kernel: wifi: brcmfmac: slab-out-of-bounds read in brcmf_get_assoc_ies()
• BZ - 2395358 - CVE-2023-53178 kernel: mm: fix zswap writeback race condition
• 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 - 2395792 - CVE-2025-39825 kernel: smb: client: fix race with concurrent opens in rename(2)
• BZ - 2395805 - CVE-2025-39817 kernel: efivarfs: Fix slab-out-of-bounds in efivarfs_d_compare
• BZ - 2395858 - CVE-2023-53305 kernel: Bluetooth: L2CAP: Fix use-after-free
• BZ - 2396114 - CVE-2022-50367 kernel: fs: fix UAF/GPF bug in nilfs_mdt_destroy
• BZ - 2396130 - CVE-2023-53365 kernel: ip6mr: Fix skb_under_panic in ip6mr_cache_report()
• BZ - 2396152 - CVE-2022-50356 kernel: net: sched: sfb: fix null pointer access issue when sfb_init() fails
• BZ - 2396158 - CVE-2023-53354 kernel: skbuff: skb_segment, Call zero copy functions before using skbuff frags
• BZ - 2396376 - CVE-2023-53393 kernel: RDMA/mlx5: Fix mlx5_ib_get_hw_stats when used for device
• BZ - 2396379 - CVE-2023-53373 kernel: crypto: seqiv - Handle EBUSY correctly
• BZ - 2396431 - CVE-2022-50386 kernel: Bluetooth: L2CAP: Fix user-after-free
• BZ - 2396494 - CVE-2022-50403 kernel: ext4: fix undefined behavior in bit shift for ext4_check_flag_values
• BZ - 2396506 - CVE-2022-50408 kernel: wifi: brcmfmac: fix use-after-free bug in brcmf_netdev_start_xmit()
• BZ - 2396536 - CVE-2022-50410 kernel: NFSD: Protect against send buffer overflow in NFSv2 READ
• BZ - 2396538 - CVE-2022-50406 kernel: iomap: iomap: fix memory corruption when recording errors during writeback
• BZ - 2396934 - CVE-2025-39864 kernel: wifi: cfg80211: fix use-after-free in cmp_bss()
• BZ - 2396944 - CVE-2025-39841 kernel: scsi: lpfc: Fix buffer free/clear order in deferred receive path
• BZ - 2397553 - CVE-2025-39883 kernel: mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory
• BZ - 2402213 - CVE-2023-53680 kernel: NFSD: Avoid calling OPDESC() with ops->opnum == OP_ILLEGAL
• 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-2022-48701
• CVE-2022-50356
• CVE-2022-50367
• CVE-2022-50386
• CVE-2022-50403
• CVE-2022-50406
• CVE-2022-50408
• CVE-2022-50410
• CVE-2023-53178
• CVE-2023-53213
• CVE-2023-53226
• CVE-2023-53297
• CVE-2023-53305
• CVE-2023-53354
• CVE-2023-53365
• CVE-2023-53373
• CVE-2023-53393
• CVE-2023-53680
• CVE-2024-46679
• CVE-2025-38718
• CVE-2025-38724
• CVE-2025-38729
• CVE-2025-39697
• CVE-2025-39757
• CVE-2025-39817
• CVE-2025-39825
• CVE-2025-39841
• CVE-2025-39864
• CVE-2025-39883
• CVE-2025-39955
• CVE-2025-40186

References

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