RHSA-2025:22752 - 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 Moderate. 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: nfsd: don't ignore the return code of svc_proc_register() (CVE-2025-22026)
• kernel: udp: Fix memory accounting leak. (CVE-2025-22058)
• kernel: net_sched: hfsc: Fix a UAF vulnerability in class handling (CVE-2025-37797)
• kernel: net: usb: smsc75xx: Limit packet length to skb->len (CVE-2023-53125)
• kernel: net_sched: ets: Fix double list add in class with netem as child qdisc (CVE-2025-37914)
• kernel: ASoC: SOF: Intel: hda: Fix potential buffer overflow by snprintf() (CVE-2022-50050)
• kernel: mptcp: do not queue data on closed subflows (CVE-2022-50070)
• kernel: ALSA: bcd2000: Fix a UAF bug on the error path of probing (CVE-2022-50229)
• kernel: KVM: SVM: Don't BUG if userspace injects an interrupt with GIF=0 (CVE-2022-50228)
• kernel: firmware: arm_scpi: Ensure scpi_info is not assigned if the probe fails (CVE-2022-50087)
• kernel: bpf: Don't use tnum_range on array range checking for poke descriptors (CVE-2022-49985)
• kernel: drm/amd/display: clear optc underflow before turn off odm clock (CVE-2022-49969)
• kernel: md-raid10: fix KASAN warning (CVE-2022-50211)
• kernel: i40e: fix MMIO write access to an invalid page in i40e_clear_hw (CVE-2025-38200)
• kernel: RDMA/iwcm: Fix use-after-free of work objects after cm_id destruction (CVE-2025-38211)
• kernel: scsi: lpfc: Use memcpy() for BIOS version (CVE-2025-38332)
• kernel: vsock: Fix transport_* TOCTOU (CVE-2025-38461)
• kernel: drm/gem: Acquire references on GEM handles for framebuffers (CVE-2025-38449)
• kernel: net/sched: sch_qfq: Fix race condition on qfq_aggregate (CVE-2025-38477)
• kernel: do_change_type(): refuse to operate on unmounted/not ours mounts (CVE-2025-38498)
• kernel: smb: client: fix use-after-free in cifs_oplock_break (CVE-2025-38527)
• kernel: HID: core: Harden s32ton() against conversion to 0 bits (CVE-2025-38556)
• kernel: tls: separate no-async decryption request handling from async (CVE-2024-58240)
• kernel: NFS: Fix a race when updating an existing write (CVE-2025-39697)
• kernel: NFS: Fix filehandle bounds checking in nfs_fh_to_dentry() (CVE-2025-39730)
• kernel: ALSA: hda/ca0132: Fix buffer overflow in add_tuning_control (CVE-2025-39751)
• kernel: wifi: brcmfmac: slab-out-of-bounds read in brcmf_get_assoc_ies() (CVE-2023-53213)
• kernel: wifi: ath9k: don't allow to overwrite ENDPOINT0 attributes (CVE-2023-53185)
• kernel: mm: fix zswap writeback race condition (CVE-2023-53178)
• kernel: Bluetooth: L2CAP: Fix use-after-free (CVE-2023-53305)
• kernel: fs: fix UAF/GPF bug in nilfs_mdt_destroy (CVE-2022-50367)
• 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: crypto: seqiv - Handle EBUSY correctly (CVE-2023-53373)
• kernel: Bluetooth: Fix potential use-after-free when clear keys (CVE-2023-53386)
• 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: wifi: cfg80211: fix use-after-free in cmp_bss() (CVE-2025-39864)

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 - 2278950 - CVE-2022-48701 kernel: ALSA: usb-audio: ALSA USB Audio Out-of-Bounds Bug
• BZ - 2360224 - CVE-2025-22026 kernel: nfsd: don't ignore the return code of svc_proc_register()
• BZ - 2360276 - CVE-2025-22058 kernel: udp: Fix memory accounting leak.
• BZ - 2363672 - CVE-2025-37797 kernel: net_sched: hfsc: Fix a UAF vulnerability in class handling
• BZ - 2363686 - CVE-2023-53125 kernel: net: usb: smsc75xx: Limit packet length to skb->len
• BZ - 2367500 - CVE-2025-37914 kernel: net_sched: ets: Fix double list add in class with netem as child qdisc
• BZ - 2373423 - CVE-2022-50050 kernel: ASoC: SOF: Intel: hda: Fix potential buffer overflow by snprintf()
• BZ - 2373435 - CVE-2022-50070 kernel: mptcp: do not queue data on closed subflows
• BZ - 2373460 - CVE-2022-50229 kernel: ALSA: bcd2000: Fix a UAF bug on the error path of probing
• BZ - 2373529 - CVE-2022-50228 kernel: KVM: SVM: Don't BUG if userspace injects an interrupt with GIF=0
• BZ - 2373539 - CVE-2022-50087 kernel: firmware: arm_scpi: Ensure scpi_info is not assigned if the probe fails
• BZ - 2373540 - CVE-2022-49985 kernel: bpf: Don't use tnum_range on array range checking for poke descriptors
• BZ - 2373635 - CVE-2022-49969 kernel: drm/amd/display: clear optc underflow before turn off odm clock
• BZ - 2373662 - CVE-2022-50211 kernel: md-raid10: fix KASAN warning
• BZ - 2376392 - CVE-2025-38200 kernel: i40e: fix MMIO write access to an invalid page in i40e_clear_hw
• BZ - 2376406 - CVE-2025-38211 kernel: RDMA/iwcm: Fix use-after-free of work objects after cm_id destruction
• BZ - 2379246 - CVE-2025-38332 kernel: scsi: lpfc: Use memcpy() for BIOS version
• BZ - 2383513 - CVE-2025-38461 kernel: vsock: Fix transport_* TOCTOU
• BZ - 2383519 - CVE-2025-38449 kernel: drm/gem: Acquire references on GEM handles for framebuffers
• BZ - 2383922 - CVE-2025-38477 kernel: net/sched: sch_qfq: Fix race condition on qfq_aggregate
• BZ - 2384422 - CVE-2025-38498 kernel: do_change_type(): refuse to operate on unmounted/not ours mounts
• BZ - 2388928 - CVE-2025-38527 kernel: smb: client: fix use-after-free in cifs_oplock_break
• BZ - 2389456 - CVE-2025-38556 kernel: HID: core: Harden s32ton() against conversion to 0 bits
• BZ - 2391431 - CVE-2024-58240 kernel: tls: separate no-async decryption request handling from async
• BZ - 2393481 - CVE-2025-39697 kernel: NFS: Fix a race when updating an existing write
• BZ - 2393731 - CVE-2025-39730 kernel: NFS: Fix filehandle bounds checking in nfs_fh_to_dentry()
• BZ - 2394624 - CVE-2025-39751 kernel: Linux kernel ALSA hda/ca0132 buffer overflow
• BZ - 2395267 - CVE-2023-53213 kernel: wifi: brcmfmac: slab-out-of-bounds read in brcmf_get_assoc_ies()
• BZ - 2395297 - CVE-2023-53185 kernel: wifi: ath9k: don't allow to overwrite ENDPOINT0 attributes
• BZ - 2395358 - CVE-2023-53178 kernel: mm: fix zswap writeback race condition
• 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 - 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 - 2396379 - CVE-2023-53373 kernel: crypto: seqiv - Handle EBUSY correctly
• BZ - 2396419 - CVE-2023-53386 kernel: Bluetooth: Fix potential use-after-free when clear keys
• 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 - 2396934 - CVE-2025-39864 kernel: wifi: cfg80211: fix use-after-free in cmp_bss()

CVEs

• CVE-2022-48701
• CVE-2022-49969
• CVE-2022-49985
• CVE-2022-50050
• CVE-2022-50070
• CVE-2022-50087
• CVE-2022-50211
• CVE-2022-50228
• CVE-2022-50229
• CVE-2022-50356
• CVE-2022-50367
• CVE-2022-50386
• CVE-2022-50403
• CVE-2022-50408
• CVE-2022-50410
• CVE-2023-53125
• CVE-2023-53178
• CVE-2023-53185
• CVE-2023-53213
• CVE-2023-53305
• CVE-2023-53354
• CVE-2023-53373
• CVE-2023-53386
• CVE-2024-58240
• CVE-2025-22026
• CVE-2025-22058
• CVE-2025-37797
• CVE-2025-37914
• CVE-2025-38200
• CVE-2025-38211
• CVE-2025-38332
• CVE-2025-38449
• CVE-2025-38461
• CVE-2025-38477
• CVE-2025-38498
• CVE-2025-38527
• CVE-2025-38556
• CVE-2025-39697
• CVE-2025-39730
• CVE-2025-39751
• CVE-2025-39864

References

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