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Red Hat Security Advisory

RHSA-2026:73187

kernel security, bug fix, and enhancement update

Released 2026-09-29 · Red Hat rating Important · View on Red Hat →

Fixed in

Fixes 4 records

TI-2026-31676 CVE-2026-43499 · GHSA-cqc6-9f34-295v

rtmutex: Use waiter::task instead of current in remove_waiter()

Priority HIGH 69

In the Linux kernel, the following vulnerability has been resolved: rtmutex: Use waiter::task instead of current in remove_waiter() remove_waiter() is used by the slowlock paths, but it is also used for proxy-lock rollba…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.05372 Published 2026-05-21 Partial fix · 5.10.261, 5.15.212 +6 CWE-416
TI-2026-52264 CVE-2026-74480 · GHSA-98rv-7h6m-5q72

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

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
TI-2026-33963 CVE-2026-46242 · GHSA-h4r8-4j67-99mx

eventpoll: fix ep_remove struct eventpoll / struct file UAF

Priority MEDIUM 43

In the Linux kernel, the following vulnerability has been resolved: eventpoll: fix ep_remove struct eventpoll / struct file UAF ep_remove() (via ep_remove_file()) cleared file->f_ep under file->f_lock but then kept using…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.04576 Published 2026-05-30 Partial fix · 5.15.222, 6.1.178 +5 CWE-416
TI-2026-31254 CVE-2026-43074 · GHSA-4j6h-qqh4-vpw7

eventpoll: defer struct eventpoll free to RCU grace period

Priority LOW 37

In the Linux kernel, the following vulnerability has been resolved: eventpoll: defer struct eventpoll free to RCU grace period In certain situations, ep_free() in eventpoll.c will kfree the epi->ep eventpoll struct while…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00482 Published 2026-05-06 Fixed in 6.6.136, 6.12.83 +3 CWE-416