RHSA-2025:7676 - Security Advisory

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.2 Extended Update Support.

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: mm: call the security_mmap_file() LSM hook in remap_file_pages() (CVE-2024-47745)
• kernel: vsock: Keep the binding until socket destruction (CVE-2025-21756)

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 - 2320248 - CVE-2024-47745 kernel: mm: call the security_mmap_file() LSM hook in remap_file_pages()
• BZ - 2348609 - CVE-2025-21756 kernel: vsock: Keep the binding until socket destruction

CVEs

• CVE-2024-47745
• CVE-2025-21756

References

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