CVE-2026-24708

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 v3 8.2 HIGH

8.2^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.8

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://bugs.launchpad.net/nova/+bug/2137507
https://www.openwall.com/lists/oss-security/2026/02/17/7
https://lists.debian.org/debian-lts-announce/2026/02/msg00025.html

Configurations

No configuration.

History

No history.

Information

Published : 2026-02-18 18:24

Updated : 2026-02-21 05:17

NVD link : CVE-2026-24708

Mitre link : CVE-2026-24708

CVE.ORG link : CVE-2026-24708

JSON object : View

Products Affected

No product.

CWE

CWE-669

Incorrect Resource Transfer Between Spheres

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