{"id":"UBUNTU-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":"2025-10-24T04:47:01Z","published":"2018-07-26T17:29:00Z","upstream":["CVE-2018-10901"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-10901"},{"type":"REPORT","url":"https://git.kernel.org/linus/3444d7da1839b851eefedd372978d8a982316c36"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-10901"}],"affected":[{"package":{"name":"linux-azure-edge","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/linux-azure-edge@5.0.0-1012.12~18.04.2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.18.0-1006.6~18.04.1","4.18.0-1007.7~18.04.1","4.18.0-1008.8~18.04.1","5.0.0-1012.12~18.04.2"],"ecosystem_specific":{"binaries":[{"binary_name":"linux-azure-edge-cloud-tools-5.0.0-1012","binary_version":"5.0.0-1012.12~18.04.2"},{"binary_name":"linux-azure-edge-tools-5.0.0-1012","binary_version":"5.0.0-1012.12~18.04.2"},{"binary_name":"linux-azure-headers-5.0.0-1012","binary_version":"5.0.0-1012.12~18.04.2"},{"binary_name":"linux-buildinfo-5.0.0-1012-azure","binary_version":"5.0.0-1012.12~18.04.2"},{"binary_name":"linux-cloud-tools-5.0.0-1012-azure","binary_version":"5.0.0-1012.12~18.04.2"},{"binary_name":"linux-headers-5.0.0-1012-azure","binary_version":"5.0.0-1012.12~18.04.2"},{"binary_name":"linux-image-unsigned-5.0.0-1012-azure","binary_version":"5.0.0-1012.12~18.04.2"},{"binary_name":"linux-modules-5.0.0-1012-azure","binary_version":"5.0.0-1012.12~18.04.2"},{"binary_name":"linux-modules-extra-5.0.0-1012-azure","binary_version":"5.0.0-1012.12~18.04.2"},{"binary_name":"linux-tools-5.0.0-1012-azure","binary_version":"5.0.0-1012.12~18.04.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-10901.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"high"}]}