UNKNOWN NVD
CVE-2026-99167
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 refe
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.
References
- https://git.kernel.org/stable/c/2465d27ef90de9105c2bffb6c35f8ce08918e642
- https://git.kernel.org/stable/c/2e012e431aa271ef3c84206f48854f539c03bff0
- https://git.kernel.org/stable/c/7b16eb911091aae237a8673da94e4dfb9cd21d54
This unknown severity vulnerability was published on 2026-10-28 via NVD.
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