CVE-2025-37828 scsi: ufs: mcq: Add NULL check in ufshcd_mcq_abort()
A race condition in the Linux kernel UFS driver can cause a NULL pointer dereference, leading to a system crash.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-37828?
CVE-2025-37828 is a medium-severity vulnerability in Linux kernel, published on 8 May 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-476
Which versions are affected by CVE-2025-37828?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2025-37828?
Apply the vendor's patch.
Is CVE-2025-37828 being exploited?
There is no known exploitation of CVE-2025-37828 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2025-37828, DEBIAN-CVE-2025-37828, GHSA-mr75-wq82-9hcw, ROOT-OS-UBUNTU-2404-CVE-2025-37828, UBUNTU-CVE-2025-37828.