CVE-2026-99167Published

net/sched: fix use-after-free in __tcf_action_put()

Exact source revision recorded 31 Oct 2026 13:33:50 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

cve-program · CVE-2026-99167

Published

In the Linux kernel, the following vulnerability has been resolved: net/sched: fix use-after-free in __tcf_action_put() __tcf_action_put() decrements the reference count before decrementing the binding count. Another thread can free the action between these operations, causing the binding-count update to access freed memory. KASAN reports it as: BUG: KASAN: slab-use-after-free in __tcf_action_put+0x327/0x340 Write of size 4 at addr ff11000000d46420 by task tc-put-pause/64 Hold the action IDR mutex across both counter updates and IDR removal, keeping cleanup outside the lock.

Source published: 28 Oct 2026 10:35:18 UTC
Source modified: 31 Oct 2026 12:44:30 UTC
Observed here: 31 Oct 2026 13:33:50 UTC
Source terms: CVE Program Terms of Use

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CVSS 3.1 · 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H