An update for kernel-rt is now available for Red Hat Enterprise Linux 8.4
 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service, and Red Hat Enterprise Linux 8.4 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.

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: arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array
 (CVE-2025-21785)

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.

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CVE-2025-21785: Out-of-bounds Write (CWE-787)