{"id":"CVE-2020-28941","details":"An issue was discovered in drivers/accessibility/speakup/spk_ttyio.c in the Linux kernel through 5.9.9. Local attackers on systems with the speakup driver could cause a local denial of service attack, aka CID-d41227544427. This occurs because of an invalid free when the line discipline is used more than once.","modified":"2026-04-16T04:33:23.722195442Z","published":"2020-11-19T19:15:11.797Z","related":["SUSE-SU-2020:3713-1","SUSE-SU-2020:3748-1","SUSE-SU-2020:3764-1","openSUSE-SU-2020:2161-1","openSUSE-SU-2020:2260-1","openSUSE-SU-2021:0242-1"],"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TITJQPYDWZ4NB2ONJWUXW75KSQIPF35T/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZF4OGZPKTAJJXWHPIFP3LHEWWEMR5LPT/"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html"},{"type":"FIX","url":"https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d4122754442799187d5d537a9c039a49a67e57f1"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git/commit/?h=tty-linus&id=d4122754442799187d5d537a9c039a49a67e57f1"},{"type":"FIX","url":"http://www.openwall.com/lists/oss-security/2020/11/19/5"},{"type":"FIX","url":"https://github.com/torvalds/linux/commit/d4122754442799187d5d537a9c039a49a67e57f1"},{"type":"FIX","url":"https://www.openwall.com/lists/oss-security/2020/11/19/3"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"5.9.9"}]},{"events":[{"introduced":"0"},{"last_affected":"32"}]},{"events":[{"introduced":"0"},{"last_affected":"33"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-28941.json"}}],"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"}]}