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CVSS Score
-| Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
|---|---|---|---|
| nova | pip | < 12.0.0a0 | 12.0.0a0 |
The vulnerability stemmed from Nova's reliance on 'qemu-img info' to autodetect disk formats during rescue mode. The unpatched correct_format method in the Raw backend (and implicit assumptions in Qcow2 initialization) allowed attackers to spoof the format via crafted images. The fix introduced disk.info to store the format persistently, replacing unsafe autodetection. The functions handling format detection before this persistence mechanism were the root cause.