CVE-2021-46932: Input: appletouch - initialize work before device registration
Vulnerability summary
CVE-2021-46932 is a medium (CVSS 5.5) Improper Initialization vulnerability in linux. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 13.7% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 14 · Related 14Timeline
- 27-02-2024PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
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
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.23%
Chance of exploitation in the next 30 days
Percentile
14%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.23% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu88 products
- linuxAll versions (No fix recorded) | < 4.4.0-257.291 | < 4.15.0-173.182 | < 5.4.0-105.119
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 4.4.0-1134.140 | < 4.4.0-1172.187 | < 4.15.0-1124.133 | < 5.4.0-1069.73
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 5a6eb676d3bc4d7a6feab200a92437b62ad298da, < d2cb2bf39a6d17ef4bdc0e59c1a35cf5751ad8f4 | ≥ 5a6eb676d3bc4d7a6feab200a92437b62ad298da, < d1962f263a176f493400b8f91bfbf2bfedce951e | ≥ 5a6eb676d3bc4d7a6feab200a92437b62ad298da, < 292d2ac61fb0d9276a0f7b7ce4f50426f2a1c99f | ≥ 5a6eb676d3bc4d7a6feab200a92437b62ad298da, < a02e1404e27855089d2b0a0acc4652c2ce65fe46 | ≥ 5a6eb676d3bc4d7a6feab200a92437b62ad298da, < 975774ea7528b489930b76a77ffc4d5379b95ff2 | ≥ 5a6eb676d3bc4d7a6feab200a92437b62ad298da, < 9f329d0d6c91142cf0ad08d23c72dd195db2633c | ≥ 5a6eb676d3bc4d7a6feab200a92437b62ad298da, < e79ff8c68acb1eddf709d3ac84716868f2a91012 | ≥ 5a6eb676d3bc4d7a6feab200a92437b62ad298da, < 9f3ccdc3f6ef10084ceb3a47df0961bec6196fd0 | 2.6.23
- linux_kernel≥ 2.6.23, < 4.4.298 | ≥ 4.5.0, < 4.9.296 | ≥ 4.10.0, < 4.14.261 | ≥ 4.15.0, < 4.19.224 | ≥ 4.20.0, < 5.4.170 | ≥ 5.5.0, < 5.10.90 | ≥ 5.11.0, < 5.15.13
Debian1 product
- linux< 5.15.15-1
3 vendors · 91 products
