RHSA-2025:22124 - Security Advisory

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions.

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-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

• kernel: net/sched: act_ct: fix skb leak and crash on ooo frags (CVE-2023-52610)
• kernel: smb: client: fix potential UAF in cifs_stats_proc_write() (CVE-2024-35868)
• 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: ipv6: sr: Fix MAC comparison to be constant-time (CVE-2025-39702)
• kernel: NFS: Fix filehandle bounds checking in nfs_fh_to_dentry() (CVE-2025-39730)
• kernel: ALSA: usb-audio: Validate UAC3 cluster segment descriptors (CVE-2025-39757)
• kernel: x86/vmscape: Add conditional IBPB mitigation (CVE-2025-40300)
• kernel: wifi: mac80211: check S1G action frame size (CVE-2023-53257)
• kernel: Bluetooth: L2CAP: fix "bad unlock balance" in l2cap_disconnect_rsp (CVE-2023-53297)
• kernel: efivarfs: Fix slab-out-of-bounds in efivarfs_d_compare (CVE-2025-39817)
• kernel: ip6mr: Fix skb_under_panic in ip6mr_cache_report() (CVE-2023-53365)
• kernel: Bluetooth: L2CAP: Fix user-after-free (CVE-2022-50386)
• kernel: nbd: fix incomplete validation of ioctl arg (CVE-2023-53513)

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 - Update Services for SAP Solutions 9.2 x86_64

Fixes

• BZ - 2270080 - CVE-2023-52610 kernel: net/sched: act_ct: fix skb leak and crash on ooo frags
• BZ - 2281745 - CVE-2024-35868 kernel: smb: client: fix potential UAF in cifs_stats_proc_write()
• 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 - 2393533 - CVE-2025-39702 kernel: ipv6: sr: Fix MAC comparison to be constant-time
• BZ - 2393731 - CVE-2025-39730 kernel: NFS: Fix filehandle bounds checking in nfs_fh_to_dentry()
• BZ - 2394615 - CVE-2025-39757 kernel: ALSA: usb-audio: Validate UAC3 cluster segment descriptors
• BZ - 2394627 - CVE-2025-40300 kernel: x86/vmscape: Add conditional IBPB mitigation
• BZ - 2395253 - CVE-2023-53257 kernel: wifi: mac80211: check S1G action frame size
• BZ - 2395681 - CVE-2023-53297 kernel: Bluetooth: L2CAP: fix "bad unlock balance" in l2cap_disconnect_rsp
• BZ - 2395805 - CVE-2025-39817 kernel: efivarfs: Fix slab-out-of-bounds in efivarfs_d_compare
• BZ - 2396130 - CVE-2023-53365 kernel: ip6mr: Fix skb_under_panic in ip6mr_cache_report()
• BZ - 2396431 - CVE-2022-50386 kernel: Bluetooth: L2CAP: Fix user-after-free
• BZ - 2400795 - CVE-2023-53513 kernel: nbd: fix incomplete validation of ioctl arg

CVEs

• CVE-2022-50386
• CVE-2023-52610
• CVE-2023-53257
• CVE-2023-53297
• CVE-2023-53365
• CVE-2023-53513
• CVE-2024-35868
• CVE-2024-46679
• CVE-2025-38729
• CVE-2025-39702
• CVE-2025-39730
• CVE-2025-39757
• CVE-2025-39817
• CVE-2025-40300

References

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