Red Hat Security Advisory

RHSA-2026:63539

kernel-rt security, bug fix, and enhancement update

Released 2026-09-04 · Red Hat rating Important · View on Red Hat →

Fixed in

Red Hat Enterprise Linux for Real Time (v. 7 ELS) kernel-rt-3.10.0-1160.160.1.rt56.1312.el7, kernel-rt-debug-3.10.0-1160.160.1.rt56.1312.el7, kernel-rt-debug-devel-3.10.0-1160.160.1.rt56.1312.el7 +4

Fixes 1 record

TI-2026-52264 CVE-2026-74480 · GHSA-98rv-7h6m-5q72

net: bridge: stop fast-leave after deleting a port group

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