{"id":"CVE-2021-33656","details":"When setting font with malicous data by ioctl cmd PIO_FONT,kernel will write memory out of bounds.","modified":"2026-03-13T04:59:25.341916Z","published":"2022-07-18T15:15:08.043Z","related":["ALSA-2023:2736","ALSA-2023:2951","SUSE-SU-2022:2719-1","SUSE-SU-2022:2720-1","SUSE-SU-2022:2721-1","SUSE-SU-2022:2723-1","SUSE-SU-2022:2741-1","SUSE-SU-2022:2808-1","SUSE-SU-2022:2809-1","SUSE-SU-2022:2827-1","SUSE-SU-2022:2840-1","SUSE-SU-2022:2875-1","SUSE-SU-2022:2875-2","SUSE-SU-2022:2892-1","SUSE-SU-2022:2892-2","SUSE-SU-2022:2910-1","SUSE-SU-2023:0416-1"],"references":[{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html"},{"type":"ADVISORY","url":"https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2021-33656&packageName=kernel"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/releases/5.10.127/vt-drop-old-font-ioctls.patch"},{"type":"FIX","url":"http://www.openwall.com/lists/oss-security/2022/07/19/3"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"20.03-NA"}]},{"events":[{"introduced":"0"},{"last_affected":"20.03-sp1"}]},{"events":[{"introduced":"0"},{"last_affected":"20.03-sp3"}]},{"events":[{"introduced":"0"},{"fixed":"5.10.127"}]},{"events":[{"introduced":"0"},{"last_affected":"10.0"}]}],"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-33656.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}