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.
CVSS
No CVSS.
References
Configurations
Configuration 1 (hide)
|
History
02 Apr 2025, 14:40
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Linux linux Kernel
Linux |
|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| References | () https://git.kernel.org/stable/c/522e75ed63f67e815d4ec0deace67df22d9ce78e - Patch | |
| References | () https://git.kernel.org/stable/c/b3c41ea5bc34d8c7b19e230d80e0e555c6f5057d - Patch | |
| References | () https://git.kernel.org/stable/c/0015581a79bbf8e521f85dddb7d3e4a66b9f51d4 - Patch | |
| References | () https://git.kernel.org/stable/c/2aef07017fae21c3d8acea9656b10e3b9c0f1e04 - Patch | |
| References | () https://git.kernel.org/stable/c/a173e3b62cf6dd3c4a0a10c8a82eedfcae81a566 - Patch | |
| References | () https://git.kernel.org/stable/c/f0feab82f6a0323f54d85e8b512a2be64f83648a - Patch | |
| References | () https://git.kernel.org/stable/c/7c56c5508dc20a6b133bc669fc34327a6711c24c - Patch | |
| References | () https://git.kernel.org/stable/c/90b7c141132244e8e49a34a4c1e445cce33e07f4 - Patch | |
| References | () https://git.kernel.org/stable/c/b4565a8a2d6bffb05bfbec11399d261ec16fe373 - Patch |
21 May 2024, 15:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2024-05-21 15:15
Updated : 2025-04-02 14:40
NVD link : CVE-2021-47323
Mitre link : CVE-2021-47323
JSON object : View
Products Affected
linux
- linux_kernel
CWE
No CWE.