CVE-2025-40001
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.
How to fix
- Linux Linuxa6f68f219d4d4b92d7c781708d4afc4cc42961ec, aacd1777d4a795c387a20b9ca776e2c1225d05d7, 6ba7e73cafd155a5d3abf560d315f0bab2b9d89f, c2c35cb2a31844f84f21ab364b38b4309d756d42, 3c90f583d679c81a5a607a6ae0051251b6dee35b, 00d3af40b158ebf7c7db2b3bbb1598a54bf28127, feb946d2fc9dc754bf3d594d42cd228860ff8647, 60cd16a3b7439ccb699d0bf533799eeb894fd217 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 20b09c2992fefbe78f8cede7b404fb143a413c52 ≤ v < a6f68f219d4d4b92d7c781708d4afc4cc42961ec, 20b09c2992fefbe78f8cede7b404fb143a413c52 ≤ v < aacd1777d4a795c387a20b9ca776e2c1225d05d7, 20b09c2992fefbe78f8cede7b404fb143a413c52 ≤ v < 6ba7e73cafd155a5d3abf560d315f0bab2b9d89f, 20b09c2992fefbe78f8cede7b404fb143a413c52 ≤ v < c2c35cb2a31844f84f21ab364b38b4309d756d42, 20b09c2992fefbe78f8cede7b404fb143a413c52 ≤ v < 3c90f583d679c81a5a607a6ae0051251b6dee35b, 20b09c2992fefbe78f8cede7b404fb143a413c52 ≤ v < 00d3af40b158ebf7c7db2b3bbb1598a54bf28127, 20b09c2992fefbe78f8cede7b404fb143a413c52 ≤ v < feb946d2fc9dc754bf3d594d42cd228860ff8647, 20b09c2992fefbe78f8cede7b404fb143a413c52 ≤ v < 60cd16a3b7439ccb699d0bf533799eeb894fd217, 2.6.31 | a6f68f219d4d4b92d7c781708d4afc4cc42961ec, aacd1777d4a795c387a20b9ca776e2c1225d05d7, 6ba7e73cafd155a5d3abf560d315f0bab2b9d89f, c2c35cb2a31844f84f21ab364b38b4309d756d42, 3c90f583d679c81a5a607a6ae0051251b6dee35b, 00d3af40b158ebf7c7db2b3bbb1598a54bf28127, feb946d2fc9dc754bf3d594d42cd228860ff8647, 60cd16a3b7439ccb699d0bf533799eeb894fd217 |
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