RHSA-2025:15658 - Security Advisory

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions.

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

Security Fix(es):

• kernel: ext4: use-after-free in ext4_xattr_set_entry() (CVE-2023-2513)
• kernel: drm/vkms: Fix use after free and double free on init error (CVE-2025-22097)
• kernel: udp: Fix memory accounting leak. (CVE-2025-22058)
• kernel: crypto: algif_hash - fix double free in hash_accept (CVE-2025-38079)
• kernel: mm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race (CVE-2025-38085)
• kernel: wifi: rtw88: fix the 'para' buffer size to avoid reading out of bounds (CVE-2025-38159)
• kernel: Bluetooth: hci_core: Fix use-after-free in vhci_flush() (CVE-2025-38250)
• kernel: posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del() (CVE-2025-38352)
• kernel: tipc: Fix use-after-free in tipc_conn_close() (CVE-2025-38464)

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 9.0 x86_64

Fixes

• BZ - 2193097 - CVE-2023-2513 kernel: ext4: use-after-free in ext4_xattr_set_entry()
• BZ - 2360223 - CVE-2025-22097 kernel: drm/vkms: Fix use after free and double free on init error
• BZ - 2360276 - CVE-2025-22058 kernel: udp: Fix memory accounting leak.
• BZ - 2373383 - CVE-2025-38079 kernel: crypto: algif_hash - fix double free in hash_accept
• BZ - 2375304 - CVE-2025-38085 kernel: mm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race
• BZ - 2376064 - CVE-2025-38159 kernel: wifi: rtw88: fix the 'para' buffer size to avoid reading out of bounds
• BZ - 2378982 - CVE-2025-38250 kernel: Bluetooth: hci_core: Fix use-after-free in vhci_flush()
• BZ - 2382581 - CVE-2025-38352 kernel: posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del()
• BZ - 2383509 - CVE-2025-38464 kernel: tipc: Fix use-after-free in tipc_conn_close()

CVEs

• CVE-2022-50269
• CVE-2022-50369
• CVE-2023-2513
• CVE-2025-22058
• CVE-2025-22097
• CVE-2025-38079
• CVE-2025-38085
• CVE-2025-38159
• CVE-2025-38250
• CVE-2025-38352
• CVE-2025-38464

References

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