Description
In the Linux kernel, the following vulnerability has been resolved: watchdog: cpu5wdt.c: Fix use-after-free bug caused by cpu5wdt_trigger When the cpu5wdt module is removing, the origin code uses del_timer() to de-activate the timer. If the timer handler is running, del_timer() could not stop it and will return directly. If the port region is released by release_region() and then the timer handler cpu5wdt_trigger() calls outb() to write into the region that is released, the use-after-free bug will happen. Change del_timer() to timer_shutdown_sync() in order that the timer handler could be finished before the port region is released.
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
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 948ed659c0151a605bd126da1e95f350ec5a7956affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 9abe50e8492d1accd7d8dc17991179472d3d4573affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 9b1c063ffc075abf56f63e55d70b9778ff534314affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < f19686d616500cd0d47b30cee82392b53f7f784aaffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 573601521277119f2e2ba5f28ae6e87fc594f4d4affected
Linux Linux
Default version status: affected
2.6.12affected0 to < 2.6.12unaffected5.15.224 to ≤ 5.15.*unaffected6.1.191 to ≤ 6.1.*unaffected6.6.33 to ≤ 6.6.*unaffected6.9.4 to ≤ 6.9.*unaffected6.10 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/948ed659c0151a605bd126da1e95f350ec5a7956 ↗
- https://git.kernel.org/stable/c/9abe50e8492d1accd7d8dc17991179472d3d4573 ↗
- https://git.kernel.org/stable/c/9b1c063ffc075abf56f63e55d70b9778ff534314 ↗
- https://git.kernel.org/stable/c/f19686d616500cd0d47b30cee82392b53f7f784a ↗
- https://git.kernel.org/stable/c/573601521277119f2e2ba5f28ae6e87fc594f4d4 ↗