RLSA-2026:0443

Security

Mirrored from RHSA-2026:0443

Issued at: 2026-01-17

Updated at: 2026-01-21

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: media: rc: fix races with imon_disconnect() (CVE-2025-39993)

* kernel: sctp: avoid NULL dereference when chunk data buffer is missing (CVE-2025-40240)

* kernel: libceph: fix potential use-after-free in have_mon_and_osd_map() (CVE-2025-68285)

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

2404121

2418832

2422801

CVEs

CVE-2025-39993

CVE-2025-40240

CVE-2025-68285

Affected packages

Rocky Linux 8 x86_64 - NFV

kernel-rt-0:4.18.0-553.92.1.rt7.433.el8_10.src.rpm

kernel-rt-0:4.18.0-553.92.1.rt7.433.el8_10.x86_64.rpm

kernel-rt-core-0:4.18.0-553.92.1.rt7.433.el8_10.x86_64.rpm

kernel-rt-debug-0:4.18.0-553.92.1.rt7.433.el8_10.x86_64.rpm

kernel-rt-debug-core-0:4.18.0-553.92.1.rt7.433.el8_10.x86_64.rpm

kernel-rt-debug-debuginfo-0:4.18.0-553.92.1.rt7.433.el8_10.x86_64.rpm

kernel-rt-debug-devel-0:4.18.0-553.92.1.rt7.433.el8_10.x86_64.rpm

kernel-rt-debuginfo-0:4.18.0-553.92.1.rt7.433.el8_10.x86_64.rpm

kernel-rt-debuginfo-common-x86_64-0:4.18.0-553.92.1.rt7.433.el8_10.x86_64.rpm

kernel-rt-debug-kvm-0:4.18.0-553.92.1.rt7.433.el8_10.x86_64.rpm

kernel-rt-debug-modules-0:4.18.0-553.92.1.rt7.433.el8_10.x86_64.rpm

kernel-rt-debug-modules-extra-0:4.18.0-553.92.1.rt7.433.el8_10.x86_64.rpm

kernel-rt-devel-0:4.18.0-553.92.1.rt7.433.el8_10.x86_64.rpm

kernel-rt-kvm-0:4.18.0-553.92.1.rt7.433.el8_10.x86_64.rpm

kernel-rt-modules-0:4.18.0-553.92.1.rt7.433.el8_10.x86_64.rpm

kernel-rt-modules-extra-0:4.18.0-553.92.1.rt7.433.el8_10.x86_64.rpm

Rocky Linux 8 x86_64 - RT