{"id":"CVE-2021-3659","details":"A NULL pointer dereference flaw was found in the Linux kernel’s IEEE 802.15.4 wireless networking subsystem in the way the user closes the LR-WPAN connection. This flaw allows a local user to crash the system. The highest threat from this vulnerability is to system availability.","modified":"2026-03-15T22:41:10.720245Z","published":"2022-08-22T15:15:13.690Z","related":["ALSA-2021:4356","SUSE-SU-2021:2643-1","SUSE-SU-2021:2644-1","SUSE-SU-2021:2645-1","SUSE-SU-2021:2646-1","SUSE-SU-2021:2647-1","SUSE-SU-2021:2678-1","SUSE-SU-2021:2687-1","SUSE-SU-2021:2756-1","SUSE-SU-2021:3876-1","SUSE-SU-2021:3929-1","SUSE-SU-2021:3935-1","SUSE-SU-2021:3969-1","SUSE-SU-2021:3972-1","openSUSE-SU-2021:1142-1","openSUSE-SU-2021:2645-1","openSUSE-SU-2021:2687-1","openSUSE-SU-2021:3876-1"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2021-3659"},{"type":"FIX","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1975949"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1165affd484889d4986cf3b724318935a0b120d8"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3659.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"5.12"}]},{"events":[{"introduced":"0"},{"last_affected":"34"}]},{"events":[{"introduced":"0"},{"last_affected":"7.0"}]},{"events":[{"introduced":"0"},{"last_affected":"8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"8.6"}]},{"events":[{"introduced":"0"},{"last_affected":"8.6"}]},{"events":[{"introduced":"0"},{"last_affected":"8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"8.6"}]},{"events":[{"introduced":"0"},{"last_affected":"8.6"}]},{"events":[{"introduced":"0"},{"last_affected":"8.6"}]},{"events":[{"introduced":"0"},{"last_affected":"8.6"}]},{"events":[{"introduced":"0"},{"last_affected":"8.6"}]},{"events":[{"introduced":"0"},{"last_affected":"4.0"}]}]}}],"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"}]}