Answer in brief
CVE-2024-38630 records a High severity (CVSS 7.8) vulnerability in watchdog: cpu5wdt.c: Fix use-after-free bug caused by cpu5wdt_trigger. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <948ed659c0151a605bd126da1e95f350ec5a7956 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9abe50e8492d1accd7d8dc17991179472d3d4573 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9b1c063ffc075abf56f63e55d70b9778ff534314 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f19686d616500cd0d47b30cee82392b53f7f784a || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <573601521277119f2e2ba5f28ae6e87fc594f4d4 | 948ed659c0151a605bd126da1e95f350ec5a7956, 9abe50e8492d1accd7d8dc17991179472d3d4573, 9b1c063ffc075abf56f63e55d70b9778ff534314, f19686d616500cd0d47b30cee82392b53f7f784a, 573601521277119f2e2ba5f28ae6e87fc594f4d4 |
| Linux/Linuxgeneric | 2.6.12 | Not reported |
Published upstream
Jun 21, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 30, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 30, 2026
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.
Quoted source text, attributed separately from HOL analysis.