{"id":"CVE-2020-27673","details":"An issue was discovered in the Linux kernel through 5.9.1, as used with Xen through 4.14.x. Guest OS users can cause a denial of service (host OS hang) via a high rate of events to dom0, aka CID-e99502f76271.","modified":"2026-04-16T04:36:09.338419720Z","published":"2020-10-22T21:15:14.013Z","related":["SUSE-SU-2020:3049-1","SUSE-SU-2020:3050-1","SUSE-SU-2020:3051-1","SUSE-SU-2020:3052-1","SUSE-SU-2020:3088-1","SUSE-SU-2020:3272-1","SUSE-SU-2020:3281-1","SUSE-SU-2020:3491-1","SUSE-SU-2020:3532-1","SUSE-SU-2020:3544-1","SUSE-SU-2021:0437-1","SUSE-SU-2021:1176-1","SUSE-SU-2021:1573-1","SUSE-SU-2021:1596-1","SUSE-SU-2021:1623-1","SUSE-SU-2021:1624-1","SUSE-SU-2021:1975-1","SUSE-SU-2021:1977-1","openSUSE-SU-2020:1783-1","openSUSE-SU-2020:1844-1","openSUSE-SU-2021:1975-1","openSUSE-SU-2021:1977-1"],"references":[{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2021/01/19/6"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202011-06"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html"},{"type":"FIX","url":"https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e99502f76271d6bc4e374fe368c50c67a1fd3070"},{"type":"FIX","url":"https://xenbits.xen.org/xsa/advisory-332.html"},{"type":"FIX","url":"https://github.com/torvalds/linux/commit/e99502f76271d6bc4e374fe368c50c67a1fd3070"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-27673.json","unresolved_ranges":[{"events":[{"introduced":"2.6.12"},{"fixed":"4.4.244"}]},{"events":[{"introduced":"4.5.0"},{"fixed":"4.9.244"}]},{"events":[{"introduced":"4.10.0"},{"fixed":"4.14.207"}]},{"events":[{"introduced":"4.15.0"},{"fixed":"4.19.155"}]},{"events":[{"introduced":"4.20.0"},{"fixed":"5.4.75"}]},{"events":[{"introduced":"5.5.0"},{"fixed":"5.9.5"}]},{"events":[{"introduced":"0"},{"last_affected":"5.10-rc1"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]},{"events":[{"introduced":"0"},{"last_affected":"15.1"}]},{"events":[{"introduced":"0"},{"last_affected":"15.2"}]},{"events":[{"introduced":"0"},{"last_affected":"4.14.0"}]}]}}],"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"}]}