{"id":"CVE-2020-25641","details":"A flaw was found in the Linux kernel's implementation of biovecs in versions before 5.9-rc7. A zero-length biovec request issued by the block subsystem could cause the kernel to enter an infinite loop, causing a denial of service. This flaw allows a local attacker with basic privileges to issue requests to a block device, resulting in a denial of service. The highest threat from this vulnerability is to system availability.","modified":"2026-03-15T22:35:07.381774Z","published":"2020-10-06T14:15:12.603Z","related":["ALSA-2020:4431","MGASA-2020-0392","SUSE-SU-2020:2904-1","SUSE-SU-2020:2905-1","SUSE-SU-2020:2906-1","SUSE-SU-2020:2907-1","SUSE-SU-2020:2980-1","SUSE-SU-2020:2999-1","SUSE-SU-2020:3014-1","SUSE-SU-2020:3230-1","SUSE-SU-2020:3491-1","SUSE-SU-2020:3503-1","SUSE-SU-2020:3532-1","SUSE-SU-2020:3544-1","openSUSE-SU-2020:1655-1","openSUSE-SU-2020:1698-1","openSUSE-SU-2020:2112-1","openSUSE-SU-2021:0242-1"],"references":[{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4576-1/"},{"type":"ADVISORY","url":"https://www.kernel.org/doc/html/latest/block/biovecs.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00042.html"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2020/10/06/9"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7e24969022cbd61ddc586f14824fc205661bb124"},{"type":"FIX","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1881424"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-25641.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"5.8.13"}]},{"events":[{"introduced":"0"},{"last_affected":"5.9.0-NA"}]},{"events":[{"introduced":"0"},{"last_affected":"5.9.0-rc1"}]},{"events":[{"introduced":"0"},{"last_affected":"5.9.0-rc2"}]},{"events":[{"introduced":"0"},{"last_affected":"5.9.0-rc3"}]},{"events":[{"introduced":"0"},{"last_affected":"5.9.0-rc4"}]},{"events":[{"introduced":"0"},{"last_affected":"5.9.0-rc5"}]},{"events":[{"introduced":"0"},{"last_affected":"5.9.0-rc6"}]},{"events":[{"introduced":"0"},{"last_affected":"7.0"}]},{"events":[{"introduced":"0"},{"last_affected":"8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"15.1"}]},{"events":[{"introduced":"0"},{"last_affected":"15.2"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]},{"events":[{"introduced":"0"},{"last_affected":"18.04"}]},{"events":[{"introduced":"0"},{"last_affected":"20.04"}]}]}}],"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"}]}