Overview
- Description
- In the Linux kernel, the following vulnerability has been resolved: watchdog: sc520_wdt: Fix possible use-after-free in wdt_turnoff() This module's remove path calls del_timer(). However, that function does not wait until the timer handler finishes. This means that the timer handler may still be running after the driver's remove function has finished, which would result in a use-after-free. Fix by calling del_timer_sync(), which makes sure the timer handler has finished, and unable to re-schedule itself.
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- NVD status
- Awaiting Analysis
Risk scores
CVSS 3.1
- Type
- Secondary
- Base score
- 8.8
- Impact score
- 5.9
- Exploitability score
- 2.8
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Severity
- HIGH
Weaknesses
- 134c704f-9b21-4f2e-91b3-4a467353bcc0
- CWE-416
Social media
- Hype score
- Not currently trending