CVE-2021-47324

May 21, 2024, 4:54 p.m.

None
No Score

Description

In the Linux kernel, the following vulnerability has been resolved: watchdog: Fix possible use-after-free in wdt_startup() 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.

Product(s) Impacted

Product Versions
Linux kernel

Weaknesses

Common security weaknesses mapped to this vulnerability.

References

https://git.kernel.org/stable/c/0ac50a76cf3cd63db000648b3b19f3f98b8aaa76
https://git.kernel.org/stable/c/146cc288fb80c662c9c35e7bc58325d1ac0a7875
https://git.kernel.org/stable/c/63a3dc24bd053792f84cb4eef0168b1266202a02
https://git.kernel.org/stable/c/862f2b5a7c38762ac9e369daefbf361a91aca685
https://git.kernel.org/stable/c/8adbbe6c86bb13e14f8a19e036ae5f4f5661fd90
https://git.kernel.org/stable/c/a397cb4576fc2fc802562418b3a50b8f67d60d31
https://git.kernel.org/stable/c/b4ebf4a4692e84163a69444c70ad515de06e2259
https://git.kernel.org/stable/c/c08a6b31e4917034f0ed0cb457c3bb209576f542
https://git.kernel.org/stable/c/dc9403097be52d57a5c9c35efa9be79d166a78af

Tags

416baaa9-dc9f-4396-8d5f-8c081fb06d67
2024-05-21
CVE-2021-47324

Timeline

Published: May 21, 2024, 3:15 p.m.
Last Modified: May 21, 2024, 4:54 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

416baaa9-dc9f-4396-8d5f-8c081fb06d67

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.