5.5

CVE-2025-37828

scsi: ufs: mcq: Add NULL check in ufshcd_mcq_abort()

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 6.5 < 6.6.89
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.26
Linux ≫ Linux Kernel Version >= 6.13 < 6.14.5
Linux ≫ Linux Kernel Version6.15 Updaterc1
Linux ≫ Linux Kernel Version6.15 Updaterc2
Linux ≫ Linux Kernel Version6.15 Updaterc3
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.15% 0.05
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

https://git.kernel.org/stable/c/d6979fabe812a168d5053e5a41d5a2e9b8afd7bf
Patch
https://git.kernel.org/stable/c/7d002f591486f5ef4bc02eb02025a53f931f0eb5
Patch
https://git.kernel.org/stable/c/47eec518aef3814f64a5da43df81bdd74d8c0041
Patch
https://git.kernel.org/stable/c/4c324085062919d4e21c69e5e78456dcec0052fe
Patch