CVE - CVE-2021-47324

CVE-ID
CVE-2021-47324	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/0ac50a76cf3cd63db000648b3b19f3f98b8aaa76 URL:https://git.kernel.org/stable/c/0ac50a76cf3cd63db000648b3b19f3f98b8aaa76 MISC:https://git.kernel.org/stable/c/146cc288fb80c662c9c35e7bc58325d1ac0a7875 URL:https://git.kernel.org/stable/c/146cc288fb80c662c9c35e7bc58325d1ac0a7875 MISC:https://git.kernel.org/stable/c/63a3dc24bd053792f84cb4eef0168b1266202a02 URL:https://git.kernel.org/stable/c/63a3dc24bd053792f84cb4eef0168b1266202a02 MISC:https://git.kernel.org/stable/c/862f2b5a7c38762ac9e369daefbf361a91aca685 URL:https://git.kernel.org/stable/c/862f2b5a7c38762ac9e369daefbf361a91aca685 MISC:https://git.kernel.org/stable/c/8adbbe6c86bb13e14f8a19e036ae5f4f5661fd90 URL:https://git.kernel.org/stable/c/8adbbe6c86bb13e14f8a19e036ae5f4f5661fd90 MISC:https://git.kernel.org/stable/c/a397cb4576fc2fc802562418b3a50b8f67d60d31 URL:https://git.kernel.org/stable/c/a397cb4576fc2fc802562418b3a50b8f67d60d31 MISC:https://git.kernel.org/stable/c/b4ebf4a4692e84163a69444c70ad515de06e2259 URL:https://git.kernel.org/stable/c/b4ebf4a4692e84163a69444c70ad515de06e2259 MISC:https://git.kernel.org/stable/c/c08a6b31e4917034f0ed0cb457c3bb209576f542 URL:https://git.kernel.org/stable/c/c08a6b31e4917034f0ed0cb457c3bb209576f542 MISC:https://git.kernel.org/stable/c/dc9403097be52d57a5c9c35efa9be79d166a78af URL:https://git.kernel.org/stable/c/dc9403097be52d57a5c9c35efa9be79d166a78af
Assigning CNA
kernel.org
Date Record Created
20240521	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240521)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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