| From bippy-1.2.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2025-37828: scsi: ufs: mcq: Add NULL check in ufshcd_mcq_abort() |
| |
| 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. |
| |
| The Linux kernel CVE team has assigned CVE-2025-37828 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.5 with commit f1304d4420777f82a1d844c606db3d9eca841765 and fixed in 6.6.89 with commit d6979fabe812a168d5053e5a41d5a2e9b8afd7bf |
| Issue introduced in 6.5 with commit f1304d4420777f82a1d844c606db3d9eca841765 and fixed in 6.12.26 with commit 7d002f591486f5ef4bc02eb02025a53f931f0eb5 |
| Issue introduced in 6.5 with commit f1304d4420777f82a1d844c606db3d9eca841765 and fixed in 6.14.5 with commit 47eec518aef3814f64a5da43df81bdd74d8c0041 |
| Issue introduced in 6.5 with commit f1304d4420777f82a1d844c606db3d9eca841765 and fixed in 6.15 with commit 4c324085062919d4e21c69e5e78456dcec0052fe |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2025-37828 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| drivers/ufs/core/ufs-mcq.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| 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 |
