CVE-2024-38630
highIn the Linux kernel, the following vulnerability has been resolved: watchdog: cpu5wdt.c: Fix use-after-free bug caused by cpu5wdt_trigger When the cpu5wdt mo…
Vendor / product: Linux — linux kernel
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.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Affected products
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
References
- https://git.kernel.org/stable/c/573601521277119f2e2ba5f28ae6e87fc594f4d4 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/948ed659c0151a605bd126da1e95f350ec5a7956 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/9abe50e8492d1accd7d8dc17991179472d3d4573 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/9b1c063ffc075abf56f63e55d70b9778ff534314 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/f19686d616500cd0d47b30cee82392b53f7f784a 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/573601521277119f2e2ba5f28ae6e87fc594f4d4 af854a3a-2127-422b-91ae-364da2661108
- https://git.kernel.org/stable/c/9b1c063ffc075abf56f63e55d70b9778ff534314 af854a3a-2127-422b-91ae-364da2661108
- https://git.kernel.org/stable/c/f19686d616500cd0d47b30cee82392b53f7f784a af854a3a-2127-422b-91ae-364da2661108