RHSA-2025:19222 - Security Advisory

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, and Red Hat Enterprise Linux 8.6 Telecommunications Update Service.

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: nfsd: don't ignore the return code of svc_proc_register() (CVE-2025-22026)
• 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: mptcp: do not queue data on closed subflows (CVE-2022-50070)
• kernel: RDMA/irdma: Fix a window for use-after-free (CVE-2022-50137)
• kernel: KVM: SVM: Don't BUG if userspace injects an interrupt with GIF=0 (CVE-2022-50228)
• kernel: HID: core: Harden s32ton() against conversion to 0 bits (CVE-2025-38556)
• 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: Bluetooth: L2CAP: Fix use-after-free (CVE-2023-53305)

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 Life Cycle Long Life 8.6 x86_64
• Red Hat Enterprise Linux Server - AUS 8.6 x86_64
• Red Hat Enterprise Linux Server - TUS 8.6 x86_64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.6 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.6 x86_64
• Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle Long Life 8.6 aarch64
• Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle Long Life 8.6 ppc64le
• Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle Long Life 8.6 s390x

Fixes

• BZ - 2360224 - CVE-2025-22026 kernel: nfsd: don't ignore the return code of svc_proc_register()
• 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 - 2373435 - CVE-2022-50070 kernel: mptcp: do not queue data on closed subflows
• BZ - 2373514 - CVE-2022-50137 kernel: RDMA/irdma: Fix a window for use-after-free
• BZ - 2373529 - CVE-2022-50228 kernel: KVM: SVM: Don't BUG if userspace injects an interrupt with GIF=0
• BZ - 2389456 - CVE-2025-38556 kernel: HID: core: Harden s32ton() against conversion to 0 bits
• BZ - 2393731 - CVE-2025-39730 kernel: NFS: Fix filehandle bounds checking in nfs_fh_to_dentry()
• BZ - 2394624 - CVE-2025-39751 kernel: ALSA: hda/ca0132: Fix buffer overflow in add_tuning_control
• BZ - 2395858 - CVE-2023-53305 kernel: Bluetooth: L2CAP: Fix use-after-free

CVEs

• CVE-2022-50070
• CVE-2022-50137
• CVE-2022-50228
• CVE-2023-53125
• CVE-2023-53305
• CVE-2025-22026
• CVE-2025-37797
• CVE-2025-38556
• CVE-2025-39730
• CVE-2025-39751

References

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