{"id":"DEBIAN-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":"2026-09-12T08:47:26.508725088Z","published":"2026-02-18T18:24:33.087Z","upstream":["CVE-2026-24708"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-24708"}],"affected":[{"package":{"name":"nova","ecosystem":"Debian:12","purl":"pkg:deb/debian/nova?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:26.2.2-1~deb12u4"}]}],"versions":["2:26.1.0-4","2:26.2.2-1~deb12u3"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-24708.json"}},{"package":{"name":"nova","ecosystem":"Debian:13","purl":"pkg:deb/debian/nova?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:31.0.0-6+deb13u2"}]}],"versions":["2:31.0.0-6","2:31.0.0-6+deb13u1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-24708.json"}},{"package":{"name":"nova","ecosystem":"Debian:14","purl":"pkg:deb/debian/nova?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:32.1.0-7"}]}],"versions":["2:31.0.0-6","2:31.0.0-7","2:32.0.0-1","2:32.0.0~rc1-1","2:32.0.0~rc1-2","2:32.0.0~rc1-3","2:32.1.0-1","2:32.1.0-2","2:32.1.0-3","2:32.1.0-4","2:32.1.0-5","2:32.1.0-6"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-24708.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H"}]}