{"id":"CVE-2021-46932","state":"PUBLISHED","title":"Input: appletouch - initialize work before device registration","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nInput: appletouch - initialize work before device registration\n\nSyzbot has reported warning in __flush_work(). This warning is caused by\nwork->func == NULL, which means missing work initialization.\n\nThis may happen, since input_dev->close() calls\ncancel_work_sync(&dev->work), but dev->work initalization happens _after_\ninput_register_device() call.\n\nSo this patch moves dev->work initialization before registering input\ndevice","publishedAt":"2024-02-27T09:44:00.108Z","updatedAt":"2026-05-11T13:44:41.401Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"5a6eb676d3bc4d7a6feab200a92437b62ad298da","status":"affected","lessThan":"d2cb2bf39a6d17ef4bdc0e59c1a35cf5751ad8f4","versionType":"git"},{"version":"5a6eb676d3bc4d7a6feab200a92437b62ad298da","status":"affected","lessThan":"d1962f263a176f493400b8f91bfbf2bfedce951e","versionType":"git"},{"version":"5a6eb676d3bc4d7a6feab200a92437b62ad298da","status":"affected","lessThan":"292d2ac61fb0d9276a0f7b7ce4f50426f2a1c99f","versionType":"git"},{"version":"5a6eb676d3bc4d7a6feab200a92437b62ad298da","status":"affected","lessThan":"a02e1404e27855089d2b0a0acc4652c2ce65fe46","versionType":"git"},{"version":"5a6eb676d3bc4d7a6feab200a92437b62ad298da","status":"affected","lessThan":"975774ea7528b489930b76a77ffc4d5379b95ff2","versionType":"git"},{"version":"5a6eb676d3bc4d7a6feab200a92437b62ad298da","status":"affected","lessThan":"9f329d0d6c91142cf0ad08d23c72dd195db2633c","versionType":"git"},{"version":"5a6eb676d3bc4d7a6feab200a92437b62ad298da","status":"affected","lessThan":"e79ff8c68acb1eddf709d3ac84716868f2a91012","versionType":"git"},{"version":"5a6eb676d3bc4d7a6feab200a92437b62ad298da","status":"affected","lessThan":"9f3ccdc3f6ef10084ceb3a47df0961bec6196fd0","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/input/mouse/appletouch.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.23","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.23","versionType":"semver"},{"version":"4.4.298","status":"unaffected","lessThanOrEqual":"4.4.*","versionType":"semver"},{"version":"4.9.296","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.261","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.224","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.170","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.90","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.13","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.16","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/input/mouse/appletouch.c"]}],"references":["https://git.kernel.org/stable/c/d2cb2bf39a6d17ef4bdc0e59c1a35cf5751ad8f4","https://git.kernel.org/stable/c/d1962f263a176f493400b8f91bfbf2bfedce951e","https://git.kernel.org/stable/c/292d2ac61fb0d9276a0f7b7ce4f50426f2a1c99f","https://git.kernel.org/stable/c/a02e1404e27855089d2b0a0acc4652c2ce65fe46","https://git.kernel.org/stable/c/975774ea7528b489930b76a77ffc4d5379b95ff2","https://git.kernel.org/stable/c/9f329d0d6c91142cf0ad08d23c72dd195db2633c","https://git.kernel.org/stable/c/e79ff8c68acb1eddf709d3ac84716868f2a91012","https://git.kernel.org/stable/c/9f3ccdc3f6ef10084ceb3a47df0961bec6196fd0"],"weaknesses":[],"ingestedAt":"2026-10-29T19:49:16.371Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/46xxx/CVE-2021-46932.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2021-46932","state":"PUBLISHED","datePublished":"2024-02-27T09:44:00.108Z","dateUpdated":"2026-05-11T13:44:41.401Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-02-25T13:45:52.720Z"},"containers":{"cna":{"title":"Input: appletouch - initialize work before device registration","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nInput: appletouch - initialize work before device registration\n\nSyzbot has reported warning in __flush_work(). 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