RHSA-2025:14749 - 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: driver: base: fix UAF when driver_attach failed (CVE-2022-49385)
• kernel: nfsd: don't ignore the return code of svc_proc_register() (CVE-2025-22026)
• kernel: tee: amdtee: fix race condition in amdtee_open_session (CVE-2023-53047)
• kernel: net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc (CVE-2025-37890)
• kernel: ftrace: Fix NULL pointer dereference in is_ftrace_trampoline when ftrace is dead (CVE-2022-49977)
• kernel: net: qrtr: start MHI channel after endpoit creation (CVE-2022-50044)
• kernel: mm/hugetlb: avoid corrupting page->mapping in hugetlb_mcopy_atomic_pte (CVE-2022-49991)
• kernel: net/sched: Always pass notifications when child class becomes empty (CVE-2025-38350)

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 - 2348020 - CVE-2022-49385 kernel: driver: base: fix UAF when driver_attach failed
• BZ - 2360224 - CVE-2025-22026 kernel: nfsd: don't ignore the return code of svc_proc_register()
• BZ - 2363689 - CVE-2023-53047 kernel: tee: amdtee: fix race condition in amdtee_open_session
• BZ - 2366848 - CVE-2025-37890 kernel: net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc
• BZ - 2373574 - CVE-2022-49977 kernel: ftrace: Fix NULL pointer dereference in is_ftrace_trampoline when ftrace is dead
• BZ - 2373627 - CVE-2022-50044 kernel: net: qrtr: start MHI channel after endpoit creation
• BZ - 2373639 - CVE-2022-49991 kernel: mm/hugetlb: avoid corrupting page->mapping in hugetlb_mcopy_atomic_pte
• BZ - 2382054 - CVE-2025-38350 kernel: net/sched: Always pass notifications when child class becomes empty

CVEs

• CVE-2022-49385
• CVE-2022-49977
• CVE-2022-49991
• CVE-2022-50044
• CVE-2023-53047
• CVE-2025-22026
• CVE-2025-37890
• CVE-2025-38350

References

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