ALSA-2026:2821
ALSA-2026:2821 · Moderate: kernel-rt security update
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
Fix available
- Published
- Updated
Stack: system
Affected products and versions
kernel-rt AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 4.18.0-553.105.1.rt7.446.el8_10
Update to 4.18.0-553.105.1.rt7.446.el8_10
kernel-rt-core AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 4.18.0-553.105.1.rt7.446.el8_10
Update to 4.18.0-553.105.1.rt7.446.el8_10
kernel-rt-debug AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 4.18.0-553.105.1.rt7.446.el8_10
Update to 4.18.0-553.105.1.rt7.446.el8_10
kernel-rt-debug-core AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 4.18.0-553.105.1.rt7.446.el8_10
Update to 4.18.0-553.105.1.rt7.446.el8_10
kernel-rt-debug-devel AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 4.18.0-553.105.1.rt7.446.el8_10
Update to 4.18.0-553.105.1.rt7.446.el8_10
kernel-rt-debug-modules AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 4.18.0-553.105.1.rt7.446.el8_10
Update to 4.18.0-553.105.1.rt7.446.el8_10
kernel-rt-debug-modules-extra AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 4.18.0-553.105.1.rt7.446.el8_10
Update to 4.18.0-553.105.1.rt7.446.el8_10
kernel-rt-devel AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 4.18.0-553.105.1.rt7.446.el8_10
Update to 4.18.0-553.105.1.rt7.446.el8_10
kernel-rt-modules AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 4.18.0-553.105.1.rt7.446.el8_10
Update to 4.18.0-553.105.1.rt7.446.el8_10
kernel-rt-modules-extra AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 4.18.0-553.105.1.rt7.446.el8_10
Update to 4.18.0-553.105.1.rt7.446.el8_10
Original sources
- https://access.redhat.com/errata/RHSA-2026:2821
- https://access.redhat.com/security/cve/CVE-2023-53762
- https://access.redhat.com/security/cve/CVE-2025-40168
- https://access.redhat.com/security/cve/CVE-2025-40304
- https://bugzilla.redhat.com/2414482
- https://bugzilla.redhat.com/2419838
- https://bugzilla.redhat.com/2419870
- https://errata.almalinux.org/8/ALSA-2026-2821.html
- https://osv.dev/vulnerability/ALSA-2026:2821