CVE-2026-24708

high Red Hat
CVSS v3 Base Score
7.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
EPSS Score
0.0%
Exploitation probability in 30 days
Top 87% most likely to be exploited
Attack Characteristics
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Confidentiality
None
Integrity
High
Availability
High
Published: February 17, 2026 (86 days ago)
Last Modified: February 17, 2026
Vendor: Red Hat

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.

CWE

CWE-73

Affected Products

Red Hat OpenStack Platform 13 (Queens)Red Hat OpenStack Platform 16.2Red Hat OpenStack Platform 17.1Red Hat OpenStack Platform 18.0

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov