{"id":"UBUNTU-CVE-2023-20592","details":"Improper or unexpected behavior of the INVD instruction in some AMD CPUs may allow an attacker with a malicious hypervisor to affect cache line write-back behavior of the CPU leading to a potential loss of guest virtual machine (VM) memory integrity.","modified":"2025-10-24T05:01:43Z","published":"2023-11-14T19:15:00Z","upstream":["CVE-2023-20592"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-20592"},{"type":"REPORT","url":"https://www.amd.com/en/resources/product-security/bulletin/amd-sb-3005.html"},{"type":"REPORT","url":"https://cachewarpattack.com/"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-20592"}],"affected":[{"package":{"name":"amd64-microcode","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/amd64-microcode@3.20180524.1~ubuntu0.14.04.2+really20130710.1ubuntu1?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.20120910-3","2.20131007.1+really20130710.1","3.20180524.1~ubuntu0.14.04.1","3.20180524.1~ubuntu0.14.04.2+really20130710.1","3.20180524.1~ubuntu0.14.04.2+really20130710.1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"amd64-microcode","binary_version":"3.20180524.1~ubuntu0.14.04.2+really20130710.1ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-20592.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"},{"type":"Ubuntu","score":"medium"}]}