PYSEC-2026-865

vendorUSosv

OpenStack Nova denial of service through compressed disk images

view advisory published 2026-07-06Licence: CC-BY-4.0

OpenStack Compute (Nova) Folsom, Grizzly, and Havana does not properly verify the virtual size of a QCOW2 image, which allows local users to cause a denial of service (host file system disk consumption) via a compressed QCOW2 image. NOTE: this issue is due to an incomplete fix for CVE-2013-2096.

01

describes (1)

Related CVEs.

IDseverity exploitable
CVE-2013-4463USlow2.1—
OpenStack Compute (Nova) Folsom, Grizzly, and Havana does not properly verify the virtual size of a QCOW2 image, which allows local users to cause a denial of service (host file sy…
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references

External citations — patches, advisories, analysis.

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