Moderate: kernel-rt security update
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: Linux kernel: Use-After-Free vulnerability in ATM subsystem (CVE-2025-38180) * kernel: macvlan: fix error recovery in macvlan_common_newlink() (CVE-2026-23209) * kernel: net/sched: cls_u32: use skb_header_pointer_careful() (CVE-2026-23204) 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.
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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: Linux kernel: Use-After-Free vulnerability in ATM subsystem (CVE-2025-38180) * kernel: macvlan: fix error recovery in macvlan_common_newlink() (CVE-2026-23209) * kernel: net/sched: cls_u32: use skb_header_pointer_careful() (CVE-2026-23204) 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.
05 / REFERENCES
Further evidence
- https://access.redhat.com/errata/RHSA-2026:6036
- https://access.redhat.com/security/cve/CVE-2025-38180
- https://access.redhat.com/security/cve/CVE-2026-23204
- https://access.redhat.com/security/cve/CVE-2026-23209
- https://bugzilla.redhat.com/2376376
- https://bugzilla.redhat.com/2439900
- https://bugzilla.redhat.com/2439931
- https://errata.almalinux.org/8/ALSA-2026-6036.html