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.

Classification

CVE ID: CVE-2025-37828

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.02% (probability of being exploited)

EPSS Percentile: 4.6% (scored less or equal to compared to others)

EPSS Date: 2025-06-06 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-37828
https://git.kernel.org/stable/c/d6979fabe812a168d5053e5a41d5a2e9b8afd7bf
https://git.kernel.org/stable/c/7d002f591486f5ef4bc02eb02025a53f931f0eb5
https://git.kernel.org/stable/c/47eec518aef3814f64a5da43df81bdd74d8c0041
https://git.kernel.org/stable/c/4c324085062919d4e21c69e5e78456dcec0052fe

Timeline