PT-2026-128160
CVE-2026-99167
·
Published
2026-10-28
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Updated
2026-10-28
Description by
Score
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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.
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