Red Hat Security AdvisoryRHSA-2026:66355
kernel security update
Released 2026-09-10 · Red Hat rating Important · View on Red Hat →
Fixed in
- Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-211.54.1.el10_2, kernel-64k-debug-devel-matched-6.12.0-211.54.1.el10_2, kernel-64k-devel-6.12.0-211.54.1.el10_2 +12
- Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-211.54.1.el10_2, kernel-64k-6.12.0-211.54.1.el10_2, kernel-64k-core-6.12.0-211.54.1.el10_2 +29
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-211.54.1.el10_2, libperf-6.12.0-211.54.1.el10_2
- Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-211.54.1.el10_2, kernel-rt-64k-6.12.0-211.54.1.el10_2, kernel-rt-64k-core-6.12.0-211.54.1.el10_2 +21
- Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-211.54.1.el10_2, kernel-rt-core-6.12.0-211.54.1.el10_2, kernel-rt-debug-6.12.0-211.54.1.el10_2 +9
Fixes 1 record
Priority MEDIUM 50
In the Linux kernel, the following vulnerability has been resolved: net: bridge: stop fast-leave after deleting a port group br_multicast_leave_group() iterates mp->ports with pp = &p->next in its fast-leave path.
CVSS 3.1CRITICAL 9.8· Network · No auth · No interaction · EPSS 0.00579 · Published 2026-08-15 · Partial fix · 5.10.265, 5.15.216 +6
