CVE-2021-46932
Linux Kernel Appletouch Missing Work Initialization Denial of Service
Description
In the Linux kernel, the following vulnerability has been resolved: Input: appletouch - initialize work before device registration Syzbot has reported warning in __flush_work(). This warning is caused by work->func == NULL, which means missing work initialization. This may happen, since input_dev->close() calls cancel_work_sync(&dev->work), but dev->work initalization happens _after_ input_register_device() call. So this patch moves dev->work initialization before registering input device
INFO
Published Date :
Feb. 27, 2024, 10:15 a.m.
Last Modified :
April 10, 2024, 6:02 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-46932.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2021-46932 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-46932 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Apr. 10, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://git.kernel.org/stable/c/292d2ac61fb0d9276a0f7b7ce4f50426f2a1c99f No Types Assigned https://git.kernel.org/stable/c/292d2ac61fb0d9276a0f7b7ce4f50426f2a1c99f Patch Changed Reference Type https://git.kernel.org/stable/c/975774ea7528b489930b76a77ffc4d5379b95ff2 No Types Assigned https://git.kernel.org/stable/c/975774ea7528b489930b76a77ffc4d5379b95ff2 Patch Changed Reference Type https://git.kernel.org/stable/c/9f329d0d6c91142cf0ad08d23c72dd195db2633c No Types Assigned https://git.kernel.org/stable/c/9f329d0d6c91142cf0ad08d23c72dd195db2633c Patch Changed Reference Type https://git.kernel.org/stable/c/9f3ccdc3f6ef10084ceb3a47df0961bec6196fd0 No Types Assigned https://git.kernel.org/stable/c/9f3ccdc3f6ef10084ceb3a47df0961bec6196fd0 Patch Changed Reference Type https://git.kernel.org/stable/c/a02e1404e27855089d2b0a0acc4652c2ce65fe46 No Types Assigned https://git.kernel.org/stable/c/a02e1404e27855089d2b0a0acc4652c2ce65fe46 Patch Changed Reference Type https://git.kernel.org/stable/c/d1962f263a176f493400b8f91bfbf2bfedce951e No Types Assigned https://git.kernel.org/stable/c/d1962f263a176f493400b8f91bfbf2bfedce951e Patch Changed Reference Type https://git.kernel.org/stable/c/d2cb2bf39a6d17ef4bdc0e59c1a35cf5751ad8f4 No Types Assigned https://git.kernel.org/stable/c/d2cb2bf39a6d17ef4bdc0e59c1a35cf5751ad8f4 Patch Changed Reference Type https://git.kernel.org/stable/c/e79ff8c68acb1eddf709d3ac84716868f2a91012 No Types Assigned https://git.kernel.org/stable/c/e79ff8c68acb1eddf709d3ac84716868f2a91012 Patch Added CWE NIST CWE-665 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 2.6.23 up to (excluding) 4.4.298 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.5.0 up to (excluding) 4.9.296 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.10.0 up to (excluding) 4.14.261 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15.0 up to (excluding) 4.19.224 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20.0 up to (excluding) 5.4.170 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5.0 up to (excluding) 5.10.90 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11.0 up to (excluding) 5.15.13 -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 27, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: Input: appletouch - initialize work before device registration Syzbot has reported warning in __flush_work(). This warning is caused by work->func == NULL, which means missing work initialization. This may happen, since input_dev->close() calls cancel_work_sync(&dev->work), but dev->work initalization happens _after_ input_register_device() call. So this patch moves dev->work initialization before registering input device Added Reference Linux https://git.kernel.org/stable/c/d2cb2bf39a6d17ef4bdc0e59c1a35cf5751ad8f4 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/d1962f263a176f493400b8f91bfbf2bfedce951e [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/292d2ac61fb0d9276a0f7b7ce4f50426f2a1c99f [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/a02e1404e27855089d2b0a0acc4652c2ce65fe46 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/975774ea7528b489930b76a77ffc4d5379b95ff2 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/9f329d0d6c91142cf0ad08d23c72dd195db2633c [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/e79ff8c68acb1eddf709d3ac84716868f2a91012 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/9f3ccdc3f6ef10084ceb3a47df0961bec6196fd0 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-46932 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-46932
weaknesses.