RHSA-2026:6036 — Security Advisory
Red Hat Security Advisory: kernel-rt security update
Severity
ModerateRed Hat Product Security
Products
Official CSAF product identity
Published · March 30, 2026
Updated · October 29, 2026
Topic
An update for kernel-rt is now available for Red Hat Enterprise Linux 8.
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: 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.