RHSA-2025:19223 - 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: HID: core: Harden s32ton() against conversion to 0 bits (CVE-2025-38556)
• kernel: sctp: linearize cloned gso packets in sctp_rcv (CVE-2025-38718)
• kernel: tls: fix handling of zero-length records on the rx_list (CVE-2025-39682)
• kernel: ALSA: hda/ca0132: Fix buffer overflow in add_tuning_control (CVE-2025-39751)

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 - 2389456 - CVE-2025-38556 kernel: HID: core: Harden s32ton() against conversion to 0 bits
• BZ - 2393166 - CVE-2025-38718 kernel: sctp: linearize cloned gso packets in sctp_rcv
• BZ - 2393511 - CVE-2025-39682 kernel: tls: fix handling of zero-length records on the rx_list
• BZ - 2394624 - CVE-2025-39751 kernel: ALSA: hda/ca0132: Fix buffer overflow in add_tuning_control

CVEs

• CVE-2025-38556
• CVE-2025-38718
• CVE-2025-39682
• CVE-2025-39751

References

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