CVE-2024-38630
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 modu…
Impact
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
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 3.8 before 6.6.33 from 6.7 before 6.9.4 |
Weakness classification
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/573601521277119f2e2ba5f28ae6e87fc594f4d4
- 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