RLSA-2026:87374

Security

Mirrored from RHSA-2026:87374

Issued at: 2026-10-23

Updated at: 2026-10-23

Advisory content derived from Red Hat RHSA-2026:87374, © Red Hat, Inc., used under CC BY 4.0, with modifications.

Synopsis

Important: kernel-rt security update

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: ipv4: raw: reject IP_HDRINCL packets with ihl < 5 (CVE-2026-64114)

* kernel: fuse: re-lock request before returning from fuse_ref_folio() (CVE-2026-64266)

* kernel: ipv4: fib: free fib_alias with kfree_rcu() on insert error path (CVE-2026-64572)

* kernel: ALSA: seq: close a re-opened queue timer in the destructor (CVE-2026-68202)

* kernel: xfs: bounds-check buffer log item's dirty bitmap (CVE-2026-80536)

* kernel: inet: frags: strip GSO state from fragments before reassembly (CVE-2026-80590)

* kernel: vfio/pci: clear vdev->msi_perm after freeing it on init failure (CVE-2026-89777)

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.

Affected products

Rocky Linux 8 x86_64

Fixes

2502486

2507098

2511413

2513245

2524501

2525413

2535066

CVEs

CVE-2026-64114

CVE-2026-64266

CVE-2026-64572

CVE-2026-68202

CVE-2026-80536

CVE-2026-80590

CVE-2026-89777

Affected packages

Rocky Linux 8 x86_64 - NFV

kernel-rt-0:4.18.0-553.177.1.rt7.518.el8_10.src.rpm

kernel-rt-0:4.18.0-553.177.1.rt7.518.el8_10.x86_64.rpm

kernel-rt-core-0:4.18.0-553.177.1.rt7.518.el8_10.x86_64.rpm

kernel-rt-debug-0:4.18.0-553.177.1.rt7.518.el8_10.x86_64.rpm

kernel-rt-debug-core-0:4.18.0-553.177.1.rt7.518.el8_10.x86_64.rpm

kernel-rt-debug-debuginfo-0:4.18.0-553.177.1.rt7.518.el8_10.x86_64.rpm

kernel-rt-debug-devel-0:4.18.0-553.177.1.rt7.518.el8_10.x86_64.rpm

kernel-rt-debuginfo-0:4.18.0-553.177.1.rt7.518.el8_10.x86_64.rpm

kernel-rt-debuginfo-common-x86_64-0:4.18.0-553.177.1.rt7.518.el8_10.x86_64.rpm

kernel-rt-debug-kvm-0:4.18.0-553.177.1.rt7.518.el8_10.x86_64.rpm

kernel-rt-debug-modules-0:4.18.0-553.177.1.rt7.518.el8_10.x86_64.rpm

kernel-rt-debug-modules-extra-0:4.18.0-553.177.1.rt7.518.el8_10.x86_64.rpm

kernel-rt-devel-0:4.18.0-553.177.1.rt7.518.el8_10.x86_64.rpm

kernel-rt-kvm-0:4.18.0-553.177.1.rt7.518.el8_10.x86_64.rpm

kernel-rt-modules-0:4.18.0-553.177.1.rt7.518.el8_10.x86_64.rpm

kernel-rt-modules-extra-0:4.18.0-553.177.1.rt7.518.el8_10.x86_64.rpm

Rocky Linux 8 x86_64 - RT