RHSA-2026:39983

Details:

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: netfilter: nf_conntrack_helper: pass helper to expect cleanup (CVE-2026-43027)

• kernel: rtmutex: Use waiter::task instead of current in remove_waiter() (CVE-2026-43499)

• kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected GFN (CVE-2026-46113)

• kernel: futex/requeue: Prevent NULL pointer dereference in remove_waiter() on self-deadlock (CVE-2026-53166)

• kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected role (CVE-2026-53359)

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.