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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
16af6067392c40e454e49eec834843ab03643d96 to < 4d83a3fc03bc595dd39b79ad61288738fbb1f2baaffected16af6067392c40e454e49eec834843ab03643d96 to < fd01abed2568209f7daaf60e5ee68ae4a4744f48affected16af6067392c40e454e49eec834843ab03643d96 to < fcc7d734ceccfab8ec3398c5b34f8e775d459507affected16af6067392c40e454e49eec834843ab03643d96 to < fde33eb9955d819af282d5f5e84684eaec248291affected16af6067392c40e454e49eec834843ab03643d96 to < 969ad6f2b266f383b44194d50d15631969b26222affected16af6067392c40e454e49eec834843ab03643d96 to < 2465d27ef90de9105c2bffb6c35f8ce08918e642affected16af6067392c40e454e49eec834843ab03643d96 to < 2e012e431aa271ef3c84206f48854f539c03bff0affected16af6067392c40e454e49eec834843ab03643d96 to < 7b16eb911091aae237a8673da94e4dfb9cd21d54affected
Linux Linux
Default version status: affected
4.19affected0 to < 4.19unaffected5.10.273 to ≤ 5.10.*unaffected5.15.224 to ≤ 5.15.*unaffected6.1.191 to ≤ 6.1.*unaffected6.6.161 to ≤ 6.6.*unaffected6.12.115 to ≤ 6.12.*unaffected6.18.59 to ≤ 6.18.*unaffected7.2.13 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/4d83a3fc03bc595dd39b79ad61288738fbb1f2ba ↗
- https://git.kernel.org/stable/c/fd01abed2568209f7daaf60e5ee68ae4a4744f48 ↗
- https://git.kernel.org/stable/c/fcc7d734ceccfab8ec3398c5b34f8e775d459507 ↗
- https://git.kernel.org/stable/c/fde33eb9955d819af282d5f5e84684eaec248291 ↗
- https://git.kernel.org/stable/c/969ad6f2b266f383b44194d50d15631969b26222 ↗
- https://git.kernel.org/stable/c/2465d27ef90de9105c2bffb6c35f8ce08918e642 ↗
- https://git.kernel.org/stable/c/2e012e431aa271ef3c84206f48854f539c03bff0 ↗
- https://git.kernel.org/stable/c/7b16eb911091aae237a8673da94e4dfb9cd21d54 ↗