DEBIAN-CVE-2026-24708

Advisory lineage Upstream: 1 Downstream: 2
Upstream
CVE-2026-24708
Published: 18 Feb 2026, 18:24
Last modified:15 Jun 2026, 19:06

Vulnerability Summary

Overall Risk (default)
medium
33/100
CVSS Score
8.2 HIGH
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

18 Feb 2026, 18:24
Published
Vulnerability first disclosed
15 Jun 2026, 19:06
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.1•HIGH•Score: 8.2CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H

Affected Systems

  • debian•nova

    all | all | all | all | < 2:22.4.0-1~deb11u7 | < 2:26.2.2-1~deb12u4 | < 2:31.0.0-6+deb13u2 | < 2:32.1.0-7

References (1)