Description
In the Linux kernel, the following vulnerability has been resolved:
scsi: mvsas: Fix use-after-free bugs in mvs_work_queue
During the detaching of Marvell's SAS/SATA controller, the original code calls cancel_delayed_work() in mvs_free() to cancel the delayed work item mwq->work_q. However, if mwq->work_q is already running, the cancel_delayed_work() may fail to cancel it. This can lead to use-after-free scenarios where mvs_free() frees the mvs_info while mvs_work_queue() is still executing and attempts to access the already-freed mvs_info.
A typical race condition is illustrated below:
CPU 0 (remove) | CPU 1 (delayed work callback) mvs_pci_remove() | mvs_free() | mvs_work_queue() cancel_delayed_work() | kfree(mvi) | | mvi-> // UAF
Replace cancel_delayed_work() with cancel_delayed_work_sync() to ensure that the delayed work item is properly canceled and any executing delayed work item completes before the mvs_info is deallocated.
This bug was found by static analysis.
Metrics
No CVSS score has been published yet.
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 20b09c2992fefbe78f8cede7b404fb143a413c52, < a6f68f219d4d4b92d7c781708d4afc4cc42961ec; >= 20b09c2992fefbe78f8cede7b404fb143a413c52, < aacd1777d4a795c387a20b9ca776e2c1225d05d7; >= 20b09c2992fefbe78f8cede7b404fb143a413c52, < 6ba7e73cafd155a5d3abf560d315f0bab2b9d89f; >= 20b09c2992fefbe78f8cede7b404fb143a413c52, < c2c35cb2a31844f84f21ab364b38b4309d756d42; >= 20b09c2992fefbe78f8cede7b404fb143a413c52, < 3c90f583d679c81a5a607a6ae0051251b6dee35b; >= 20b09c2992fefbe78f8cede7b404fb143a413c52, < 00d3af40b158ebf7c7db2b3bbb1598a54bf28127; >= 20b09c2992fefbe78f8cede7b404fb143a413c52, < feb946d2fc9dc754bf3d594d42cd228860ff8647; >= 20b09c2992fefbe78f8cede7b404fb143a413c52, < 60cd16a3b7439ccb699d0bf533799eeb894fd217 |
| Linux | Linux | 2.6.31 |
References
- https://git.kernel.org/stable/c/00d3af40b158ebf7c7db2b3bbb1598a54bf28127
- https://git.kernel.org/stable/c/3c90f583d679c81a5a607a6ae0051251b6dee35b
- https://git.kernel.org/stable/c/60cd16a3b7439ccb699d0bf533799eeb894fd217
- https://git.kernel.org/stable/c/6ba7e73cafd155a5d3abf560d315f0bab2b9d89f
- https://git.kernel.org/stable/c/a6f68f219d4d4b92d7c781708d4afc4cc42961ec
- https://git.kernel.org/stable/c/aacd1777d4a795c387a20b9ca776e2c1225d05d7
- https://git.kernel.org/stable/c/c2c35cb2a31844f84f21ab364b38b4309d756d42
- https://git.kernel.org/stable/c/feb946d2fc9dc754bf3d594d42cd228860ff8647
Timeline
- Published
- Oct 18, 2025
- Last modified
- Oct 19, 2026
- NVD status
- Deferred