{"id":"CVE-2018-10901","details":"A flaw was found in Linux kernel's KVM virtualization subsystem. The VMX code does not restore the GDT.LIMIT to the previous host value, but instead sets it to 64KB. With a corrupted GDT limit a host's userspace code has an ability to place malicious entries in the GDT, particularly to the per-cpu variables. An attacker can use this to escalate their privileges.","modified":"2026-05-04T08:25:57.490143Z","published":"2018-07-26T17:29:00.893Z","withdrawn":"2026-05-04T08:25:57.490143Z","references":[{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/104905"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:2390"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:2391"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:2392"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:2394"},{"type":"ADVISORY","url":"https://www.oracle.com/security-alerts/cpujul2020.html"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:2393"},{"type":"ADVISORY","url":"https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0"},{"type":"FIX","url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10901"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3444d7da1839b851eefedd372978d8a982316c36"},{"type":"FIX","url":"https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-10901.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"2.6.36"}]},{"events":[{"introduced":"0"},{"last_affected":"6.0"}]},{"events":[{"introduced":"0"},{"last_affected":"6.0"}]},{"events":[{"introduced":"0"},{"last_affected":"6.4"}]},{"events":[{"introduced":"0"},{"last_affected":"6.5"}]},{"events":[{"introduced":"0"},{"last_affected":"6.6"}]},{"events":[{"introduced":"0"},{"last_affected":"6.0"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}