{"id":"UBUNTU-CVE-2021-45464","details":"kvmtool through 39181fc allows an out-of-bounds write, related to virtio/balloon.c and virtio/pci.c. This allows a guest OS user to execute arbitrary code on the host machine.","modified":"2026-04-14T09:50:49.189065Z","published":"2023-04-15T23:15:00Z","related":["USN-8172-1"],"upstream":["CVE-2021-45464"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-45464"},{"type":"REPORT","url":"https://www.kalmarunionen.dk/writeups/2021/hxp-2021/lkvm/"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-45464"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8172-1"}],"affected":[{"package":{"name":"kvmtool","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/kvmtool@0.20151104-1ubuntu0.1~esm1?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.20151104-1ubuntu0.1~esm1"}]}],"versions":["0.20150908-1","0.20151104-1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"0.20151104-1ubuntu0.1~esm1","binary_name":"kvmtool"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-45464.json"}},{"package":{"name":"kvmtool","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/kvmtool@0.20170904-1ubuntu0.18.04.1~esm1?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.20170904-1ubuntu0.18.04.1~esm1"}]}],"versions":["0.20161128-1","0.20170904-1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"kvmtool","binary_version":"0.20170904-1ubuntu0.18.04.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-45464.json"}},{"package":{"name":"kvmtool","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/kvmtool@0.20170904-1ubuntu0.20.04.1~esm1?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.20170904-1ubuntu0.20.04.1~esm1"}]}],"versions":["0.20170904-1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"kvmtool","binary_version":"0.20170904-1ubuntu0.20.04.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-45464.json"}},{"package":{"name":"kvmtool","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/kvmtool@0.20170904-1.1ubuntu0.1~esm2?arch=source&distro=esm-apps/jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.20170904-1.1ubuntu0.1~esm2"}]}],"versions":["0.20170904-1.1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"kvmtool","binary_version":"0.20170904-1.1ubuntu0.1~esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-45464.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"},{"type":"Ubuntu","score":"high"}]}