RLSA-2026:2821

Security

Mirrored from RHSA-2026:2821

Issued at: 2026-02-26

Updated at: 2026-02-26

Synopsis

Moderate: 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: smc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match() (CVE-2025-40168)

* kernel: Linux kernel Bluetooth: Denial of Service due to use-after-free in connection handling (CVE-2023-53762)

* kernel: Linux kernel: Out-of-bounds write in fbdev can lead to privilege escalation, information disclosure, or denial of service. (CVE-2025-40304)

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

2414482

2419838

2419870

CVEs

CVE-2023-53762

CVE-2025-40168

CVE-2025-40304

Affected packages

Rocky Linux 8 x86_64 - NFV

kernel-rt-0:4.18.0-553.105.1.rt7.446.el8_10.src.rpm

kernel-rt-0:4.18.0-553.105.1.rt7.446.el8_10.x86_64.rpm

kernel-rt-core-0:4.18.0-553.105.1.rt7.446.el8_10.x86_64.rpm

kernel-rt-debug-0:4.18.0-553.105.1.rt7.446.el8_10.x86_64.rpm

kernel-rt-debug-core-0:4.18.0-553.105.1.rt7.446.el8_10.x86_64.rpm

kernel-rt-debug-debuginfo-0:4.18.0-553.105.1.rt7.446.el8_10.x86_64.rpm

kernel-rt-debug-devel-0:4.18.0-553.105.1.rt7.446.el8_10.x86_64.rpm

kernel-rt-debuginfo-0:4.18.0-553.105.1.rt7.446.el8_10.x86_64.rpm

kernel-rt-debuginfo-common-x86_64-0:4.18.0-553.105.1.rt7.446.el8_10.x86_64.rpm

kernel-rt-debug-kvm-0:4.18.0-553.105.1.rt7.446.el8_10.x86_64.rpm

kernel-rt-debug-modules-0:4.18.0-553.105.1.rt7.446.el8_10.x86_64.rpm

kernel-rt-debug-modules-extra-0:4.18.0-553.105.1.rt7.446.el8_10.x86_64.rpm

kernel-rt-devel-0:4.18.0-553.105.1.rt7.446.el8_10.x86_64.rpm

kernel-rt-kvm-0:4.18.0-553.105.1.rt7.446.el8_10.x86_64.rpm

kernel-rt-modules-0:4.18.0-553.105.1.rt7.446.el8_10.x86_64.rpm

kernel-rt-modules-extra-0:4.18.0-553.105.1.rt7.446.el8_10.x86_64.rpm

Rocky Linux 8 x86_64 - RT