RHSA-2026:49213 — Security Advisory
Red Hat Security Advisory: kernel-rt security update
Severity
ImportantRed Hat Product Security
Products
Official CSAF product identity
Published · August 1, 2026
Updated · October 31, 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 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: rtnetlink: add missing netlink_ns_capable() check for peer netns (CVE-2026-31692)
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kernel: netfilter: ctnetlink: ensure safe access to master conntrack (CVE-2026-43116)
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kernel: fanotify: fix false positive on permission events (CVE-2026-46150)
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kernel: net: sched: UAF via missing handler for TC_ACT_CONSUMED in tcf_qevent_handle ()
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kernel: net/sched: cls_api: Handle TC_ACT_CONSUMED in tcf_qevent_handle (CVE-2026-64530)
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.