Nova · Vulnerability
cve-program · CVE-2026-24708
PublishedAn 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.
Read the publisher's advisoryAffected versions, risk and source history
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CVE-2026-24708 · CVE overview and exploitation status
cve-program · CVE-2026-24708
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