Description
In the Linux kernel, the following vulnerability has been resolved:
scsi: ufs: mcq: Add NULL check in ufshcd_mcq_abort()
A race can occur between the MCQ completion path and the abort handler: once a request completes, __blk_mq_free_request() sets rq->mq_hctx to NULL, meaning the subsequent ufshcd_mcq_req_to_hwq() call in ufshcd_mcq_abort() can return a NULL pointer. If this NULL pointer is dereferenced, the kernel will crash.
Add a NULL check for the returned hwq pointer. If hwq is NULL, log an error and return FAILED, preventing a potential NULL-pointer dereference. As suggested by Bart, the ufshcd_cmd_inflight() check is removed.
This is similar to the fix in commit 74736103fb41 ("scsi: ufs: core: Fix ufshcd_abort_one racing issue").
This is found by our static analysis tool KNighter.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= f1304d4420777f82a1d844c606db3d9eca841765, < d6979fabe812a168d5053e5a41d5a2e9b8afd7bf; >= f1304d4420777f82a1d844c606db3d9eca841765, < 7d002f591486f5ef4bc02eb02025a53f931f0eb5; >= f1304d4420777f82a1d844c606db3d9eca841765, < 47eec518aef3814f64a5da43df81bdd74d8c0041; >= f1304d4420777f82a1d844c606db3d9eca841765, < 4c324085062919d4e21c69e5e78456dcec0052fe |
| Linux | Linux | 6.5 |
References
- https://git.kernel.org/stable/c/47eec518aef3814f64a5da43df81bdd74d8c0041Patch
- https://git.kernel.org/stable/c/4c324085062919d4e21c69e5e78456dcec0052fePatch
- https://git.kernel.org/stable/c/7d002f591486f5ef4bc02eb02025a53f931f0eb5Patch
- https://git.kernel.org/stable/c/d6979fabe812a168d5053e5a41d5a2e9b8afd7bfPatch
Timeline
- Published
- May 8, 2025
- Last modified
- Jun 17, 2026
- NVD status
- Analyzed