{"id":"CVE-2021-46916","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nixgbe: Fix NULL pointer dereference in ethtool loopback test\n\nThe ixgbe driver currently generates a NULL pointer dereference when\nperforming the ethtool loopback test. This is due to the fact that there\nisn't a q_vector associated with the test ring when it is setup as\ninterrupts are not normally added to the test rings.\n\nTo address this I have added code that will check for a q_vector before\nreturning a napi_id value. If a q_vector is not present it will return a\nvalue of 0.","modified":"2026-03-13T05:19:20.691040Z","published":"2024-02-27T07:15:08.250Z","references":[{"type":"FIX","url":"https://git.kernel.org/stable/c/31166efb1cee348eb6314e9c0095d84cbeb66b9d"},{"type":"FIX","url":"https://git.kernel.org/stable/c/758d19098df4b0bbca9f40d6ae6c82c9c18b9bba"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"5.11.0"},{"fixed":"5.11.16"}]}],"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-46916.json"}}],"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"}]}