{"id":"CVE-2021-47476","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ncomedi: ni_usb6501: fix NULL-deref in command paths\n\nThe driver uses endpoint-sized USB transfer buffers but had no sanity\nchecks on the sizes. This can lead to zero-size-pointer dereferences or\noverflowed transfer buffers in ni6501_port_command() and\nni6501_counter_command() if a (malicious) device has smaller max-packet\nsizes than expected (or when doing descriptor fuzz testing).\n\nAdd the missing sanity checks to probe().","modified":"2026-03-15T22:43:14.299985Z","published":"2024-05-22T09:15:09.470Z","related":["SUSE-SU-2024:2008-1","SUSE-SU-2024:2011-1","SUSE-SU-2024:2019-1","SUSE-SU-2024:2189-1","SUSE-SU-2024:2190-1"],"references":[{"type":"FIX","url":"https://git.kernel.org/stable/c/58478143771b20ab219937b1c30a706590a59224"},{"type":"FIX","url":"https://git.kernel.org/stable/c/aa39738423503825625853b643b9e99d11c23816"},{"type":"FIX","url":"https://git.kernel.org/stable/c/b0156b7c9649d8f55a2ce3d3258509f1b2a181c3"},{"type":"FIX","url":"https://git.kernel.org/stable/c/d6a727a681a39ae4f73081a9bedb45d14f95bdd1"},{"type":"FIX","url":"https://git.kernel.org/stable/c/df7b1238f3b599a0b9284249772cdfd1ea83a632"},{"type":"FIX","url":"https://git.kernel.org/stable/c/ef143dc0c3defe56730ecd3a9de7b3e1d7e557c1"},{"type":"FIX","url":"https://git.kernel.org/stable/c/4a9d43cb5d5f39fa39fc1da438517004cc95f7ea"},{"type":"FIX","url":"https://git.kernel.org/stable/c/907767da8f3a925b060c740e0b5c92ea7dbec440"},{"type":"FIX","url":"https://git.kernel.org/stable/c/bc51111bf6e8e7b6cc94b133e4c291273a16acd1"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47476.json","unresolved_ranges":[{"events":[{"introduced":"3.18"},{"fixed":"4.4.292"}]},{"events":[{"introduced":"4.5"},{"fixed":"4.9.290"}]},{"events":[{"introduced":"4.10"},{"fixed":"4.14.255"}]},{"events":[{"introduced":"4.15"},{"fixed":"4.19.217"}]},{"events":[{"introduced":"4.20"},{"fixed":"5.4.159"}]},{"events":[{"introduced":"5.5"},{"fixed":"5.10.79"}]},{"events":[{"introduced":"5.11"},{"fixed":"5.14.18"}]},{"events":[{"introduced":"5.15"},{"fixed":"5.15.2"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}