Issued:
2025-12-17
Updated:
2025-12-17

RHSA-2025:23445 - Important: kernel security update

Synopsis

Important: kernel security update

Type/Severity

Security Advisory Important

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

ProductVersionArch
Red Hat Enterprise Linux Server - AUS8.2x86_64

Updated Packages

  • kernel-debug-devel-4.18.0-193.178.1.el8_2.x86_64.rpm
  • kernel-cross-headers-4.18.0-193.178.1.el8_2.x86_64.rpm
  • kernel-4.18.0-193.178.1.el8_2.x86_64.rpm
  • kernel-debuginfo-4.18.0-193.178.1.el8_2.x86_64.rpm
  • kernel-doc-4.18.0-193.178.1.el8_2.noarch.rpm
  • kernel-debug-4.18.0-193.178.1.el8_2.x86_64.rpm
  • kernel-debug-core-4.18.0-193.178.1.el8_2.x86_64.rpm
  • kernel-tools-libs-4.18.0-193.178.1.el8_2.x86_64.rpm
  • bpftool-debuginfo-4.18.0-193.178.1.el8_2.x86_64.rpm
  • kernel-4.18.0-193.178.1.el8_2.src.rpm
  • kernel-debug-modules-4.18.0-193.178.1.el8_2.x86_64.rpm
  • kernel-devel-4.18.0-193.178.1.el8_2.x86_64.rpm
  • perf-debuginfo-4.18.0-193.178.1.el8_2.x86_64.rpm
  • kernel-core-4.18.0-193.178.1.el8_2.x86_64.rpm
  • python3-perf-4.18.0-193.178.1.el8_2.x86_64.rpm
  • kernel-headers-4.18.0-193.178.1.el8_2.x86_64.rpm
  • kernel-debug-modules-extra-4.18.0-193.178.1.el8_2.x86_64.rpm
  • kernel-abi-whitelists-4.18.0-193.178.1.el8_2.noarch.rpm
  • kernel-modules-4.18.0-193.178.1.el8_2.x86_64.rpm
  • kernel-modules-extra-4.18.0-193.178.1.el8_2.x86_64.rpm
  • kernel-tools-4.18.0-193.178.1.el8_2.x86_64.rpm
  • kernel-tools-debuginfo-4.18.0-193.178.1.el8_2.x86_64.rpm
  • kernel-debuginfo-common-x86_64-4.18.0-193.178.1.el8_2.x86_64.rpm
  • perf-4.18.0-193.178.1.el8_2.x86_64.rpm
  • python3-perf-debuginfo-4.18.0-193.178.1.el8_2.x86_64.rpm
  • bpftool-4.18.0-193.178.1.el8_2.x86_64.rpm
  • kernel-debug-debuginfo-4.18.0-193.178.1.el8_2.x86_64.rpm

Fixes

CVEs

References

Additional information