CVE-2026-99167
HIGH
MEDIUM
Priority: 0.01
BB Relevance:
41/100
Published: 2026-10-28
Modified: 2026-10-31
First seen: 2026-10-29
Status: active
Attack Surface
Low Complexity
No Interaction
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
High
I:
High
A:
High
Description
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.
Affected Software (19)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | 16af6067392c40e454e49eec834843ab03643d96 < 2465d27ef90de9105c2bffb6c35f8ce08918e642 |
| Linux | Linux | 16af6067392c40e454e49eec834843ab03643d96 < 4d83a3fc03bc595dd39b79ad61288738fbb1f2ba |
| Linux | Linux | 16af6067392c40e454e49eec834843ab03643d96 < fd01abed2568209f7daaf60e5ee68ae4a4744f48 |
| Linux | Linux | 16af6067392c40e454e49eec834843ab03643d96 < fcc7d734ceccfab8ec3398c5b34f8e775d459507 |
| Linux | Linux | 16af6067392c40e454e49eec834843ab03643d96 < fde33eb9955d819af282d5f5e84684eaec248291 |
| Linux | Linux | 16af6067392c40e454e49eec834843ab03643d96 < 969ad6f2b266f383b44194d50d15631969b26222 |
| Linux | Linux | 16af6067392c40e454e49eec834843ab03643d96 < 2465d27ef90de9105c2bffb6c35f8ce08918e642 |
| Linux | Linux | 16af6067392c40e454e49eec834843ab03643d96 < 2e012e431aa271ef3c84206f48854f539c03bff0 |
| Linux | Linux | 16af6067392c40e454e49eec834843ab03643d96 < 7b16eb911091aae237a8673da94e4dfb9cd21d54 |
| Linux | Linux | 4.19 |
| Linux | Linux | 16af6067392c40e454e49eec834843ab03643d96 < 4d83a3fc03bc595dd39b79ad61288738fbb1f2ba |
| Linux | Linux | 16af6067392c40e454e49eec834843ab03643d96 < fd01abed2568209f7daaf60e5ee68ae4a4744f48 |
| Linux | Linux | 16af6067392c40e454e49eec834843ab03643d96 < fcc7d734ceccfab8ec3398c5b34f8e775d459507 |
| Linux | Linux | 16af6067392c40e454e49eec834843ab03643d96 < fde33eb9955d819af282d5f5e84684eaec248291 |
| Linux | Linux | 16af6067392c40e454e49eec834843ab03643d96 < 969ad6f2b266f383b44194d50d15631969b26222 |
| Linux | Linux | 16af6067392c40e454e49eec834843ab03643d96 < 2465d27ef90de9105c2bffb6c35f8ce08918e642 |
| Linux | Linux | 16af6067392c40e454e49eec834843ab03643d96 < 2e012e431aa271ef3c84206f48854f539c03bff0 |
| Linux | Linux | 16af6067392c40e454e49eec834843ab03643d96 < 7b16eb911091aae237a8673da94e4dfb9cd21d54 |
| Linux | Linux | 4.19 |