{"id":"UBUNTU-CVE-2018-7858","details":"Quick Emulator (aka QEMU), when built with the Cirrus CLGD 54xx VGA Emulator support, allows local guest OS privileged users to cause a denial of service (out-of-bounds access and QEMU process crash) by leveraging incorrect region calculation when updating VGA display.","modified":"2026-01-30T01:45:16.610949Z","published":"2018-03-12T00:00:00Z","related":["USN-3649-1"],"upstream":["CVE-2018-7858"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-7858"},{"type":"REPORT","url":"https://lists.nongnu.org/archive/html/qemu-devel/2018-03/msg02174.html"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3649-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-7858"}],"affected":[{"package":{"name":"qemu","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/qemu@1:2.11+dfsg-1ubuntu7.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.11+dfsg-1ubuntu7.1"}]}],"versions":["1:2.10+dfsg-0ubuntu3","1:2.10+dfsg-0ubuntu4","1:2.10+dfsg-0ubuntu5","1:2.11+dfsg-1ubuntu1","1:2.11+dfsg-1ubuntu2","1:2.11+dfsg-1ubuntu4","1:2.11+dfsg-1ubuntu5","1:2.11+dfsg-1ubuntu6","1:2.11+dfsg-1ubuntu7"],"ecosystem_specific":{"binaries":[{"binary_name":"qemu","binary_version":"1:2.11+dfsg-1ubuntu7.1"},{"binary_name":"qemu-block-extra","binary_version":"1:2.11+dfsg-1ubuntu7.1"},{"binary_name":"qemu-guest-agent","binary_version":"1:2.11+dfsg-1ubuntu7.1"},{"binary_name":"qemu-kvm","binary_version":"1:2.11+dfsg-1ubuntu7.1"},{"binary_name":"qemu-system","binary_version":"1:2.11+dfsg-1ubuntu7.1"},{"binary_name":"qemu-system-arm","binary_version":"1:2.11+dfsg-1ubuntu7.1"},{"binary_name":"qemu-system-common","binary_version":"1:2.11+dfsg-1ubuntu7.1"},{"binary_name":"qemu-system-mips","binary_version":"1:2.11+dfsg-1ubuntu7.1"},{"binary_name":"qemu-system-misc","binary_version":"1:2.11+dfsg-1ubuntu7.1"},{"binary_name":"qemu-system-ppc","binary_version":"1:2.11+dfsg-1ubuntu7.1"},{"binary_name":"qemu-system-s390x","binary_version":"1:2.11+dfsg-1ubuntu7.1"},{"binary_name":"qemu-system-sparc","binary_version":"1:2.11+dfsg-1ubuntu7.1"},{"binary_name":"qemu-system-x86","binary_version":"1:2.11+dfsg-1ubuntu7.1"},{"binary_name":"qemu-user","binary_version":"1:2.11+dfsg-1ubuntu7.1"},{"binary_name":"qemu-user-binfmt","binary_version":"1:2.11+dfsg-1ubuntu7.1"},{"binary_name":"qemu-user-static","binary_version":"1:2.11+dfsg-1ubuntu7.1"},{"binary_name":"qemu-utils","binary_version":"1:2.11+dfsg-1ubuntu7.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-7858.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:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}