Important: 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: KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O (CVE-2025-40026) * kernel: xfrm single-frag length not properly limited * kernel: dm log: fix out-of-bounds write due to region_count overflow (CVE-2026-53059) * kernel: tipc: fix double-free in tipc_buf_append() (CVE-2026-52993)
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: KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O (CVE-2025-40026) * kernel: xfrm single-frag length not properly limited * kernel: dm log: fix out-of-bounds write due to region_count overflow (CVE-2026-53059) * kernel: tipc: fix double-free in tipc_buf_append() (CVE-2026-52993)
05 / REFERENCES
Further evidence
- https://access.redhat.com/errata/RHSA-2026:45116
- https://access.redhat.com/security/cve/CVE-2025-40026
- https://access.redhat.com/security/cve/CVE-2026-52993
- https://access.redhat.com/security/cve/CVE-2026-53059
- https://bugzilla.redhat.com/2406712
- https://bugzilla.redhat.com/2492277
- https://bugzilla.redhat.com/2492437
- https://errata.almalinux.org/8/ALSA-2026-45116.html
- https://www.redhat.com/security/data/cve/CVE-2026-64561.html