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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
20b09c2992fefbe78f8cede7b404fb143a413c52 to < a6f68f219d4d4b92d7c781708d4afc4cc42961ecaffected20b09c2992fefbe78f8cede7b404fb143a413c52 to < aacd1777d4a795c387a20b9ca776e2c1225d05d7affected20b09c2992fefbe78f8cede7b404fb143a413c52 to < 6ba7e73cafd155a5d3abf560d315f0bab2b9d89faffected20b09c2992fefbe78f8cede7b404fb143a413c52 to < c2c35cb2a31844f84f21ab364b38b4309d756d42affected20b09c2992fefbe78f8cede7b404fb143a413c52 to < 3c90f583d679c81a5a607a6ae0051251b6dee35baffected20b09c2992fefbe78f8cede7b404fb143a413c52 to < 00d3af40b158ebf7c7db2b3bbb1598a54bf28127affected20b09c2992fefbe78f8cede7b404fb143a413c52 to < feb946d2fc9dc754bf3d594d42cd228860ff8647affected20b09c2992fefbe78f8cede7b404fb143a413c52 to < 60cd16a3b7439ccb699d0bf533799eeb894fd217affected
Linux Linux
Default version status: affected
2.6.31affected0 to < 2.6.31unaffected5.4.301 to ≤ 5.4.*unaffected5.10.246 to ≤ 5.10.*unaffected5.15.195 to ≤ 5.15.*unaffected6.1.157 to ≤ 6.1.*unaffected6.6.113 to ≤ 6.6.*unaffected6.12.54 to ≤ 6.12.*unaffected6.17.4 to ≤ 6.17.*unaffected6.18 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/a6f68f219d4d4b92d7c781708d4afc4cc42961ec ↗
- https://git.kernel.org/stable/c/aacd1777d4a795c387a20b9ca776e2c1225d05d7 ↗
- https://git.kernel.org/stable/c/6ba7e73cafd155a5d3abf560d315f0bab2b9d89f ↗
- https://git.kernel.org/stable/c/c2c35cb2a31844f84f21ab364b38b4309d756d42 ↗
- https://git.kernel.org/stable/c/3c90f583d679c81a5a607a6ae0051251b6dee35b ↗
- https://git.kernel.org/stable/c/00d3af40b158ebf7c7db2b3bbb1598a54bf28127 ↗
- https://git.kernel.org/stable/c/feb946d2fc9dc754bf3d594d42cd228860ff8647 ↗
- https://git.kernel.org/stable/c/60cd16a3b7439ccb699d0bf533799eeb894fd217 ↗