{"id":"CVE-2020-36557","details":"A race condition in the Linux kernel before 5.6.2 between the VT_DISALLOCATE ioctl and closing/opening of ttys could lead to a use-after-free.","modified":"2026-03-14T10:30:00.948151Z","published":"2022-07-21T04:15:09.830Z","related":["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-2022:2809-1","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-2022:3274-1","SUSE-SU-2022:4027-1","SUSE-SU-2022:4129-1","SUSE-SU-2023:0416-1"],"references":[{"type":"FIX","url":"https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.2"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ca4463bf8438b403596edd0ec961ca0d4fbe0220"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"5.6.2"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-36557.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}