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| author |   Tejun Heo <tj@kernel.org> | 2026-05-11 12:05:48 -1000 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2026-05-11 12:05:48 -1000 |
| commit | 9a415cc53711f2238e0f0ca8a6bcc796c003b127 (patch) | |
| tree | 01457067f3d0db705e447ca715917d56033ac764 /tools/testing/selftests/dm-verity/git:/ssh:/git@git.zx2c4.com | |
| parent | sched_ext: Clear ops->priv on scx_alloc_and_add_sched() error paths (diff) | |
sched_ext: Avoid UAF in scx_root_enable_workfn() init failure path
In scx_root_enable_workfn(), put_task_struct(p) is called before scx_error()
dereferences p->comm and p->pid. If the iterator's reference is the last
drop, the task is freed synchronously and the deref becomes a UAF.
Move put_task_struct() past scx_error().
Reported-by: Sashiko <sashiko-bot@kernel.org>
Closes: https://lore.kernel.org/all/20260511214031.AF5E9C2BCB0@smtp.kernel.org/
Fixes: f0e1a0643a59 ("sched_ext: Implement BPF extensible scheduler class")
Cc: stable@vger.kernel.org # v6.12+
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'tools/testing/selftests/dm-verity/git:/ssh:/git@git.zx2c4.com')
0 files changed, 0 insertions, 0 deletions