{"id":"CVE-2020-13974","details":"An issue was discovered in the Linux kernel 4.4 through 5.7.1. drivers/tty/vt/keyboard.c has an integer overflow if k_ascii is called several times in a row, aka CID-b86dab054059. NOTE: Members in the community argue that the integer overflow does not lead to a security issue in this case.","modified":"2026-03-15T22:33:18.880361Z","published":"2020-06-09T05:15:10.787Z","related":["ALSA-2022:1988","SUSE-SU-2020:14442-1","SUSE-SU-2020:1693-1","SUSE-SU-2020:1699-1","SUSE-SU-2020:2027-1","SUSE-SU-2020:2103-1","SUSE-SU-2020:2105-1","SUSE-SU-2020:2106-1","SUSE-SU-2020:2107-1","SUSE-SU-2020:2121-1","SUSE-SU-2020:2134-1","SUSE-SU-2020:2152-1","SUSE-SU-2020:2156-1","SUSE-SU-2020:2478-1","SUSE-SU-2020:2487-1","openSUSE-SU-2020:0935-1","openSUSE-SU-2020:1153-1","openSUSE-SU-2021:0242-1"],"references":[{"type":"ADVISORY","url":"https://usn.ubuntu.com/4439-1/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4440-1/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4485-1/"},{"type":"ADVISORY","url":"https://www.oracle.com/security-alerts/cpujul2022.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html"},{"type":"ADVISORY","url":"https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=dad0bf9ce93fa40b667eccd3306783f4db4b932b"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/08/msg00019.html"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4427-1/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4483-1/"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b86dab054059b970111b5516ae548efaae5b3aae"},{"type":"EVIDENCE","url":"https://lkml.org/lkml/2020/3/22/482"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-13974.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"4.4.227"}]},{"events":[{"introduced":"4.5"},{"fixed":"4.9.227"}]},{"events":[{"introduced":"4.10"},{"fixed":"4.14.184"}]},{"events":[{"introduced":"4.15"},{"fixed":"4.19.128"}]},{"events":[{"introduced":"4.20"},{"fixed":"5.4.46"}]},{"events":[{"introduced":"5.5"},{"fixed":"5.6.18"}]},{"events":[{"introduced":"5.7"},{"fixed":"5.7.2"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]},{"events":[{"introduced":"0"},{"last_affected":"14.04"}]},{"events":[{"introduced":"0"},{"last_affected":"16.04"}]},{"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:H/I:H/A:H"}]}