CVE-2021-47324

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.

• CWE-416

• https://git.kernel.org/stable/c/0ac50a76cf3cd63db000648b3b19f3f98b8aaa76Patch
• https://git.kernel.org/stable/c/146cc288fb80c662c9c35e7bc58325d1ac0a7875Patch
• https://git.kernel.org/stable/c/63a3dc24bd053792f84cb4eef0168b1266202a02Patch
• https://git.kernel.org/stable/c/862f2b5a7c38762ac9e369daefbf361a91aca685Patch
• https://git.kernel.org/stable/c/8adbbe6c86bb13e14f8a19e036ae5f4f5661fd90Patch
• https://git.kernel.org/stable/c/a397cb4576fc2fc802562418b3a50b8f67d60d31Patch
• https://git.kernel.org/stable/c/b4ebf4a4692e84163a69444c70ad515de06e2259Patch
• https://git.kernel.org/stable/c/c08a6b31e4917034f0ed0cb457c3bb209576f542Patch
• https://git.kernel.org/stable/c/dc9403097be52d57a5c9c35efa9be79d166a78afPatch
• https://git.kernel.org/stable/c/0ac50a76cf3cd63db000648b3b19f3f98b8aaa76Patch
• https://git.kernel.org/stable/c/146cc288fb80c662c9c35e7bc58325d1ac0a7875Patch
• https://git.kernel.org/stable/c/63a3dc24bd053792f84cb4eef0168b1266202a02Patch
• https://git.kernel.org/stable/c/862f2b5a7c38762ac9e369daefbf361a91aca685Patch
• https://git.kernel.org/stable/c/8adbbe6c86bb13e14f8a19e036ae5f4f5661fd90Patch
• https://git.kernel.org/stable/c/a397cb4576fc2fc802562418b3a50b8f67d60d31Patch
• https://git.kernel.org/stable/c/b4ebf4a4692e84163a69444c70ad515de06e2259Patch
• https://git.kernel.org/stable/c/c08a6b31e4917034f0ed0cb457c3bb209576f542Patch
• https://git.kernel.org/stable/c/dc9403097be52d57a5c9c35efa9be79d166a78afPatch

Published

May 21, 2024

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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