{"id":"UBUNTU-CVE-2026-24708","details":"An issue was discovered in OpenStack Nova before 30.2.2, 31 before 31.2.1, and 32 before 32.1.1. By writing a malicious QCOW header to a root or ephemeral disk and then triggering a resize, a user may convince Nova's Flat image backend to call qemu-img without a format restriction, resulting in an unsafe image resize operation that could destroy data on the host system. Only compute nodes using the Flat image backend (usually configured with use_cow_images=False) are affected.","modified":"2026-06-30T18:17:40.167509502Z","published":"2026-02-17T15:00:00Z","related":["USN-8049-1"],"upstream":["CVE-2026-24708"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-24708"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-24708"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8049-1"},{"type":"REPORT","url":"https://security.openstack.org/ossa/OSSA-2026-002.html"}],"affected":[{"package":{"name":"nova","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/nova?arch=source&distro=esm-infra%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:12.0.0-0ubuntu2","2:13.0.0~b1-0ubuntu1","2:13.0.0~b2-0ubuntu1","2:13.0.0~b3-0ubuntu1","2:13.0.0~rc1-0ubuntu1","2:13.0.0~rc3-0ubuntu1","2:13.0.0-0ubuntu1","2:13.0.0-0ubuntu2","2:13.0.0-0ubuntu5","2:13.1.0-0ubuntu1","2:13.1.1-0ubuntu1","2:13.1.1-0ubuntu1.1","2:13.1.2-0ubuntu2","2:13.1.3-0ubuntu1","2:13.1.3-0ubuntu2","2:13.1.4-0ubuntu1","2:13.1.4-0ubuntu2","2:13.1.4-0ubuntu3","2:13.1.4-0ubuntu4.1","2:13.1.4-0ubuntu4.2","2:13.1.4-0ubuntu4.3","2:13.1.4-0ubuntu4.4","2:13.1.4-0ubuntu4.5","2:13.1.4-0ubuntu4.5+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"nova-ajax-console-proxy","binary_version":"2:13.1.4-0ubuntu4.5+esm1"},{"binary_name":"nova-api","binary_version":"2:13.1.4-0ubuntu4.5+esm1"},{"binary_version":"2:13.1.4-0ubuntu4.5+esm1","binary_name":"nova-api-metadata"},{"binary_version":"2:13.1.4-0ubuntu4.5+esm1","binary_name":"nova-api-os-compute"},{"binary_name":"nova-api-os-volume","binary_version":"2:13.1.4-0ubuntu4.5+esm1"},{"binary_name":"nova-cells","binary_version":"2:13.1.4-0ubuntu4.5+esm1"},{"binary_version":"2:13.1.4-0ubuntu4.5+esm1","binary_name":"nova-cert"},{"binary_name":"nova-common","binary_version":"2:13.1.4-0ubuntu4.5+esm1"},{"binary_name":"nova-compute","binary_version":"2:13.1.4-0ubuntu4.5+esm1"},{"binary_version":"2:13.1.4-0ubuntu4.5+esm1","binary_name":"nova-compute-kvm"},{"binary_version":"2:13.1.4-0ubuntu4.5+esm1","binary_name":"nova-compute-libvirt"},{"binary_version":"2:13.1.4-0ubuntu4.5+esm1","binary_name":"nova-compute-lxc"},{"binary_name":"nova-compute-qemu","binary_version":"2:13.1.4-0ubuntu4.5+esm1"},{"binary_name":"nova-compute-vmware","binary_version":"2:13.1.4-0ubuntu4.5+esm1"},{"binary_version":"2:13.1.4-0ubuntu4.5+esm1","binary_name":"nova-compute-xen"},{"binary_version":"2:13.1.4-0ubuntu4.5+esm1","binary_name":"nova-conductor"},{"binary_name":"nova-console","binary_version":"2:13.1.4-0ubuntu4.5+esm1"},{"binary_version":"2:13.1.4-0ubuntu4.5+esm1","binary_name":"nova-consoleauth"},{"binary_version":"2:13.1.4-0ubuntu4.5+esm1","binary_name":"nova-network"},{"binary_name":"nova-novncproxy","binary_version":"2:13.1.4-0ubuntu4.5+esm1"},{"binary_version":"2:13.1.4-0ubuntu4.5+esm1","binary_name":"nova-scheduler"},{"binary_version":"2:13.1.4-0ubuntu4.5+esm1","binary_name":"nova-serialproxy"},{"binary_version":"2:13.1.4-0ubuntu4.5+esm1","binary_name":"nova-spiceproxy"},{"binary_version":"2:13.1.4-0ubuntu4.5+esm1","binary_name":"nova-volume"},{"binary_version":"2:13.1.4-0ubuntu4.5+esm1","binary_name":"nova-xvpvncproxy"},{"binary_version":"2:13.1.4-0ubuntu4.5+esm1","binary_name":"python-nova"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-24708.json"}},{"package":{"name":"nova","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/nova?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:16.0.1-0ubuntu1","2:16.0.1-0ubuntu2","2:17.0.0~b1-0ubuntu1","2:17.0.0~b2-0ubuntu2","2:17.0.0~b3-0ubuntu3","2:17.0.0~b3-0ubuntu4","2:17.0.0~rc1-0ubuntu1","2:17.0.0~rc2-0ubuntu1","2:17.0.0~rc3-0ubuntu1","2:17.0.0-0ubuntu1","2:17.0.1-0ubuntu1","2:17.0.3-0ubuntu1","2:17.0.4-0ubuntu1","2:17.0.5-0ubuntu1","2:17.0.5-0ubuntu2","2:17.0.6-0ubuntu1","2:17.0.7-0ubuntu1","2:17.0.7-0ubuntu2","2:17.0.9-0ubuntu1","2:17.0.9-0ubuntu3","2:17.0.10-0ubuntu2","2:17.0.10-0ubuntu2.1","2:17.0.11-0ubuntu1","2:17.0.12-0ubuntu1","2:17.0.13-0ubuntu1","2:17.0.13-0ubuntu2","2:17.0.13-0ubuntu3","2:17.0.13-0ubuntu4","2:17.0.13-0ubuntu5","2:17.0.13-0ubuntu5.2","2:17.0.13-0ubuntu5.3","2:17.0.13-0ubuntu5.4","2:17.0.13-0ubuntu5.4+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"nova-ajax-console-proxy","binary_version":"2:17.0.13-0ubuntu5.4+esm1"},{"binary_version":"2:17.0.13-0ubuntu5.4+esm1","binary_name":"nova-api"},{"binary_version":"2:17.0.13-0ubuntu5.4+esm1","binary_name":"nova-api-metadata"},{"binary_version":"2:17.0.13-0ubuntu5.4+esm1","binary_name":"nova-api-os-compute"},{"binary_version":"2:17.0.13-0ubuntu5.4+esm1","binary_name":"nova-api-os-volume"},{"binary_name":"nova-cells","binary_version":"2:17.0.13-0ubuntu5.4+esm1"},{"binary_name":"nova-common","binary_version":"2:17.0.13-0ubuntu5.4+esm1"},{"binary_name":"nova-compute","binary_version":"2:17.0.13-0ubuntu5.4+esm1"},{"binary_name":"nova-compute-kvm","binary_version":"2:17.0.13-0ubuntu5.4+esm1"},{"binary_name":"nova-compute-libvirt","binary_version":"2:17.0.13-0ubuntu5.4+esm1"},{"binary_version":"2:17.0.13-0ubuntu5.4+esm1","binary_name":"nova-compute-lxc"},{"binary_name":"nova-compute-qemu","binary_version":"2:17.0.13-0ubuntu5.4+esm1"},{"binary_version":"2:17.0.13-0ubuntu5.4+esm1","binary_name":"nova-compute-vmware"},{"binary_version":"2:17.0.13-0ubuntu5.4+esm1","binary_name":"nova-compute-xen"},{"binary_name":"nova-conductor","binary_version":"2:17.0.13-0ubuntu5.4+esm1"},{"binary_version":"2:17.0.13-0ubuntu5.4+esm1","binary_name":"nova-console"},{"binary_name":"nova-consoleauth","binary_version":"2:17.0.13-0ubuntu5.4+esm1"},{"binary_name":"nova-network","binary_version":"2:17.0.13-0ubuntu5.4+esm1"},{"binary_name":"nova-novncproxy","binary_version":"2:17.0.13-0ubuntu5.4+esm1"},{"binary_name":"nova-placement-api","binary_version":"2:17.0.13-0ubuntu5.4+esm1"},{"binary_name":"nova-scheduler","binary_version":"2:17.0.13-0ubuntu5.4+esm1"},{"binary_name":"nova-serialproxy","binary_version":"2:17.0.13-0ubuntu5.4+esm1"},{"binary_version":"2:17.0.13-0ubuntu5.4+esm1","binary_name":"nova-spiceproxy"},{"binary_name":"nova-volume","binary_version":"2:17.0.13-0ubuntu5.4+esm1"},{"binary_name":"nova-xvpvncproxy","binary_version":"2:17.0.13-0ubuntu5.4+esm1"},{"binary_name":"python-nova","binary_version":"2:17.0.13-0ubuntu5.4+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-24708.json"}},{"package":{"name":"nova","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/nova?arch=source&distro=esm-infra%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:20.0.0-0ubuntu1","2:21.0.0~b1~git2019120415.45fb747c98-0ubuntu1","2:21.0.0~b2~git2020021008.1fcd74730d-0ubuntu2","2:21.0.0~b2~git2020021008.1fcd74730d-0ubuntu4","2:21.0.0~b2~git2020021008.1fcd74730d-0ubuntu5","2:21.0.0~b3~git2020041013.57ff308d6d-0ubuntu2","2:21.0.0-0ubuntu0.20.04.1","2:21.0.0-0ubuntu0.20.04.2","2:21.1.0-0ubuntu1","2:21.1.1-0ubuntu2","2:21.1.2-0ubuntu1","2:21.2.0-0ubuntu1","2:21.2.1-0ubuntu1","2:21.2.2-0ubuntu1","2:21.2.3-0ubuntu1","2:21.2.4-0ubuntu1","2:21.2.4-0ubuntu2","2:21.2.4-0ubuntu2.1","2:21.2.4-0ubuntu2.2","2:21.2.4-0ubuntu2.3","2:21.2.4-0ubuntu2.4","2:21.2.4-0ubuntu2.5","2:21.2.4-0ubuntu2.6","2:21.2.4-0ubuntu2.8","2:21.2.4-0ubuntu2.11","2:21.2.4-0ubuntu2.13","2:21.2.4-0ubuntu2.14","2:21.2.4-0ubuntu2.14+esm1","2:21.2.4-0ubuntu2.14+esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"nova-ajax-console-proxy","binary_version":"2:21.2.4-0ubuntu2.14+esm2"},{"binary_name":"nova-api","binary_version":"2:21.2.4-0ubuntu2.14+esm2"},{"binary_name":"nova-api-metadata","binary_version":"2:21.2.4-0ubuntu2.14+esm2"},{"binary_name":"nova-api-os-compute","binary_version":"2:21.2.4-0ubuntu2.14+esm2"},{"binary_name":"nova-api-os-volume","binary_version":"2:21.2.4-0ubuntu2.14+esm2"},{"binary_version":"2:21.2.4-0ubuntu2.14+esm2","binary_name":"nova-cells"},{"binary_version":"2:21.2.4-0ubuntu2.14+esm2","binary_name":"nova-common"},{"binary_name":"nova-compute","binary_version":"2:21.2.4-0ubuntu2.14+esm2"},{"binary_name":"nova-compute-kvm","binary_version":"2:21.2.4-0ubuntu2.14+esm2"},{"binary_version":"2:21.2.4-0ubuntu2.14+esm2","binary_name":"nova-compute-libvirt"},{"binary_name":"nova-compute-lxc","binary_version":"2:21.2.4-0ubuntu2.14+esm2"},{"binary_name":"nova-compute-qemu","binary_version":"2:21.2.4-0ubuntu2.14+esm2"},{"binary_name":"nova-compute-vmware","binary_version":"2:21.2.4-0ubuntu2.14+esm2"},{"binary_name":"nova-compute-xen","binary_version":"2:21.2.4-0ubuntu2.14+esm2"},{"binary_name":"nova-conductor","binary_version":"2:21.2.4-0ubuntu2.14+esm2"},{"binary_name":"nova-novncproxy","binary_version":"2:21.2.4-0ubuntu2.14+esm2"},{"binary_name":"nova-scheduler","binary_version":"2:21.2.4-0ubuntu2.14+esm2"},{"binary_version":"2:21.2.4-0ubuntu2.14+esm2","binary_name":"nova-serialproxy"},{"binary_version":"2:21.2.4-0ubuntu2.14+esm2","binary_name":"nova-spiceproxy"},{"binary_name":"nova-volume","binary_version":"2:21.2.4-0ubuntu2.14+esm2"},{"binary_version":"2:21.2.4-0ubuntu2.14+esm2","binary_name":"python3-nova"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-24708.json"}},{"package":{"name":"nova","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/nova?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3:25.2.1-0ubuntu2.10"}]}],"versions":["3:24.0.0-0ubuntu1","3:24.0.0+git2022030310.3f274c65cc-0ubuntu2","3:25.0.0-0ubuntu1","3:25.0.0-0ubuntu1.1","3:25.0.1-0ubuntu1","3:25.1.0-0ubuntu1","3:25.1.0-0ubuntu2","3:25.1.0-0ubuntu2.1","3:25.1.0-0ubuntu2.2","3:25.1.1-0ubuntu1","3:25.1.1-0ubuntu1.1","3:25.2.0-0ubuntu1","3:25.2.1-0ubuntu1","3:25.2.1-0ubuntu2","3:25.2.1-0ubuntu2.3","3:25.2.1-0ubuntu2.6","3:25.2.1-0ubuntu2.7","3:25.2.1-0ubuntu2.8","3:25.2.1-0ubuntu2.9"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"nova-ajax-console-proxy","binary_version":"3:25.2.1-0ubuntu2.10"},{"binary_version":"3:25.2.1-0ubuntu2.10","binary_name":"nova-api"},{"binary_name":"nova-api-metadata","binary_version":"3:25.2.1-0ubuntu2.10"},{"binary_version":"3:25.2.1-0ubuntu2.10","binary_name":"nova-api-os-compute"},{"binary_name":"nova-api-os-volume","binary_version":"3:25.2.1-0ubuntu2.10"},{"binary_name":"nova-cells","binary_version":"3:25.2.1-0ubuntu2.10"},{"binary_version":"3:25.2.1-0ubuntu2.10","binary_name":"nova-common"},{"binary_name":"nova-compute","binary_version":"3:25.2.1-0ubuntu2.10"},{"binary_version":"3:25.2.1-0ubuntu2.10","binary_name":"nova-compute-ironic"},{"binary_version":"3:25.2.1-0ubuntu2.10","binary_name":"nova-compute-kvm"},{"binary_name":"nova-compute-libvirt","binary_version":"3:25.2.1-0ubuntu2.10"},{"binary_name":"nova-compute-lxc","binary_version":"3:25.2.1-0ubuntu2.10"},{"binary_version":"3:25.2.1-0ubuntu2.10","binary_name":"nova-compute-qemu"},{"binary_name":"nova-compute-vmware","binary_version":"3:25.2.1-0ubuntu2.10"},{"binary_name":"nova-compute-xen","binary_version":"3:25.2.1-0ubuntu2.10"},{"binary_version":"3:25.2.1-0ubuntu2.10","binary_name":"nova-conductor"},{"binary_version":"3:25.2.1-0ubuntu2.10","binary_name":"nova-novncproxy"},{"binary_version":"3:25.2.1-0ubuntu2.10","binary_name":"nova-scheduler"},{"binary_name":"nova-serialproxy","binary_version":"3:25.2.1-0ubuntu2.10"},{"binary_name":"nova-spiceproxy","binary_version":"3:25.2.1-0ubuntu2.10"},{"binary_name":"nova-volume","binary_version":"3:25.2.1-0ubuntu2.10"},{"binary_name":"python3-nova","binary_version":"3:25.2.1-0ubuntu2.10"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-24708.json"}},{"package":{"name":"nova","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/nova?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3:29.2.0-0ubuntu1.3"}]}],"versions":["3:28.0.0-0ubuntu1","3:28.0.1+git2024011916.087c372a-0ubuntu1","3:28.0.1+git2024011916.087c372a-0ubuntu2","3:29.0.0~rc1-0ubuntu2","3:29.0.1-0ubuntu1","3:29.0.1-0ubuntu1.3","3:29.0.1-0ubuntu1.4","3:29.2.0-0ubuntu1","3:29.2.0-0ubuntu1.1","3:29.2.0-0ubuntu1.2"],"ecosystem_specific":{"binaries":[{"binary_version":"3:29.2.0-0ubuntu1.3","binary_name":"nova-ajax-console-proxy"},{"binary_name":"nova-api","binary_version":"3:29.2.0-0ubuntu1.3"},{"binary_name":"nova-api-metadata","binary_version":"3:29.2.0-0ubuntu1.3"},{"binary_name":"nova-api-os-compute","binary_version":"3:29.2.0-0ubuntu1.3"},{"binary_version":"3:29.2.0-0ubuntu1.3","binary_name":"nova-api-os-volume"},{"binary_version":"3:29.2.0-0ubuntu1.3","binary_name":"nova-cells"},{"binary_name":"nova-common","binary_version":"3:29.2.0-0ubuntu1.3"},{"binary_name":"nova-compute","binary_version":"3:29.2.0-0ubuntu1.3"},{"binary_name":"nova-compute-ironic","binary_version":"3:29.2.0-0ubuntu1.3"},{"binary_name":"nova-compute-kvm","binary_version":"3:29.2.0-0ubuntu1.3"},{"binary_name":"nova-compute-libvirt","binary_version":"3:29.2.0-0ubuntu1.3"},{"binary_version":"3:29.2.0-0ubuntu1.3","binary_name":"nova-compute-lxc"},{"binary_name":"nova-compute-qemu","binary_version":"3:29.2.0-0ubuntu1.3"},{"binary_name":"nova-compute-vmware","binary_version":"3:29.2.0-0ubuntu1.3"},{"binary_version":"3:29.2.0-0ubuntu1.3","binary_name":"nova-compute-xen"},{"binary_name":"nova-conductor","binary_version":"3:29.2.0-0ubuntu1.3"},{"binary_name":"nova-novncproxy","binary_version":"3:29.2.0-0ubuntu1.3"},{"binary_name":"nova-scheduler","binary_version":"3:29.2.0-0ubuntu1.3"},{"binary_version":"3:29.2.0-0ubuntu1.3","binary_name":"nova-serialproxy"},{"binary_version":"3:29.2.0-0ubuntu1.3","binary_name":"nova-spiceproxy"},{"binary_name":"nova-volume","binary_version":"3:29.2.0-0ubuntu1.3"},{"binary_name":"python3-nova","binary_version":"3:29.2.0-0ubuntu1.3"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-24708.json"}},{"package":{"name":"nova","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/nova?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3:32.0.0-0ubuntu1.1"}]}],"versions":["3:31.0.0-0ubuntu1","3:31.0.0+git2025070714.1c03429337-0ubuntu1","3:31.0.0+git2025070714.1c03429337-0ubuntu2","3:32.0.0~rc1-0ubuntu1","3:32.0.0-0ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"nova-ajax-console-proxy","binary_version":"3:32.0.0-0ubuntu1.1"},{"binary_name":"nova-api","binary_version":"3:32.0.0-0ubuntu1.1"},{"binary_name":"nova-api-metadata","binary_version":"3:32.0.0-0ubuntu1.1"},{"binary_name":"nova-api-os-compute","binary_version":"3:32.0.0-0ubuntu1.1"},{"binary_name":"nova-api-os-volume","binary_version":"3:32.0.0-0ubuntu1.1"},{"binary_name":"nova-cells","binary_version":"3:32.0.0-0ubuntu1.1"},{"binary_name":"nova-common","binary_version":"3:32.0.0-0ubuntu1.1"},{"binary_name":"nova-compute","binary_version":"3:32.0.0-0ubuntu1.1"},{"binary_name":"nova-compute-ironic","binary_version":"3:32.0.0-0ubuntu1.1"},{"binary_name":"nova-compute-kvm","binary_version":"3:32.0.0-0ubuntu1.1"},{"binary_name":"nova-compute-libvirt","binary_version":"3:32.0.0-0ubuntu1.1"},{"binary_name":"nova-compute-lxc","binary_version":"3:32.0.0-0ubuntu1.1"},{"binary_name":"nova-compute-qemu","binary_version":"3:32.0.0-0ubuntu1.1"},{"binary_name":"nova-compute-vmware","binary_version":"3:32.0.0-0ubuntu1.1"},{"binary_name":"nova-compute-xen","binary_version":"3:32.0.0-0ubuntu1.1"},{"binary_name":"nova-conductor","binary_version":"3:32.0.0-0ubuntu1.1"},{"binary_version":"3:32.0.0-0ubuntu1.1","binary_name":"nova-novncproxy"},{"binary_name":"nova-scheduler","binary_version":"3:32.0.0-0ubuntu1.1"},{"binary_name":"nova-serialproxy","binary_version":"3:32.0.0-0ubuntu1.1"},{"binary_name":"nova-spiceproxy","binary_version":"3:32.0.0-0ubuntu1.1"},{"binary_name":"nova-volume","binary_version":"3:32.0.0-0ubuntu1.1"},{"binary_name":"python3-nova","binary_version":"3:32.0.0-0ubuntu1.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-24708.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}