CVE-2026-99167
net/sched: fix use-after-free in __tcf_action_put()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Oct 28, 2026 |
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Affected Versions
Linux / Linux
16af6067392c40e454e49eec834843ab03643d96 < 2465d27ef90de9105c2bffb6c35f8ce08918e642 16af6067392c40e454e49eec834843ab03643d96 < 2e012e431aa271ef3c84206f48854f539c03bff0 16af6067392c40e454e49eec834843ab03643d96 < 7b16eb911091aae237a8673da94e4dfb9cd21d54
Linux / Linux
4.19