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.
Product status
20b09c2992fefbe78f8cede7b404fb143a413c52 before 6ba7e73cafd155a5d3abf560d315f0bab2b9d89f
20b09c2992fefbe78f8cede7b404fb143a413c52 before c2c35cb2a31844f84f21ab364b38b4309d756d42
20b09c2992fefbe78f8cede7b404fb143a413c52 before 3c90f583d679c81a5a607a6ae0051251b6dee35b
20b09c2992fefbe78f8cede7b404fb143a413c52 before 00d3af40b158ebf7c7db2b3bbb1598a54bf28127
20b09c2992fefbe78f8cede7b404fb143a413c52 before feb946d2fc9dc754bf3d594d42cd228860ff8647
20b09c2992fefbe78f8cede7b404fb143a413c52 before 60cd16a3b7439ccb699d0bf533799eeb894fd217
2.6.31
Any version before 2.6.31
5.15.195
6.1.157
6.6.113
6.12.54
6.17.4
6.18-rc1
References
git.kernel.org/...c/6ba7e73cafd155a5d3abf560d315f0bab2b9d89f
git.kernel.org/...c/c2c35cb2a31844f84f21ab364b38b4309d756d42
git.kernel.org/...c/3c90f583d679c81a5a607a6ae0051251b6dee35b
git.kernel.org/...c/00d3af40b158ebf7c7db2b3bbb1598a54bf28127
git.kernel.org/...c/feb946d2fc9dc754bf3d594d42cd228860ff8647
git.kernel.org/...c/60cd16a3b7439ccb699d0bf533799eeb894fd217
