{"id":"CVE-2021-46994","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: mcp251x: fix resume from sleep before interface was brought up\n\nSince 8ce8c0abcba3 the driver queues work via priv-\u003erestart_work when\nresuming after suspend, even when the interface was not previously\nenabled. This causes a null dereference error as the workqueue is only\nallocated and initialized in mcp251x_open().\n\nTo fix this we move the workqueue init to mcp251x_can_probe() as there\nis no reason to do it later and repeat it whenever mcp251x_open() is\ncalled.\n\n[mkl: fix error handling in mcp251x_stop()]","modified":"2026-03-14T14:59:01.316269Z","published":"2024-02-28T09:15:37.923Z","references":[{"type":"FIX","url":"https://git.kernel.org/stable/c/03c427147b2d3e503af258711af4fc792b89b0af"},{"type":"FIX","url":"https://git.kernel.org/stable/c/6f8f1c27b577de15f69fefce3c502bb6300d825c"},{"type":"FIX","url":"https://git.kernel.org/stable/c/e1e10a390fd9479209c4d834d916ca5e6d5d396b"},{"type":"FIX","url":"https://git.kernel.org/stable/c/eecb4df8ec9f896b19ee05bfa632ac6c1dcd8f21"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-46994.json","unresolved_ranges":[{"events":[{"introduced":"5.5"},{"fixed":"5.10.38"}]},{"events":[{"introduced":"5.11"},{"fixed":"5.11.22"}]},{"events":[{"introduced":"5.12"},{"fixed":"5.12.5"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}