PkgSeer

Vulnerability PYSEC-2026-2685

High Risk

4 months ago

OpenStack Nova calls qemu-img without format restrictions for resize

15.1.5 - 30.2.1 and 31.0.0.0rc1 - 31.2.0 and 32.0.0.0rc1 - 32.1.0

Summary

OpenStack Nova calls qemu-img without format restrictions for resize

Details

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.

References

Related Vulnerabilities

Other vulnerabilities affecting the same packages

OpenStack Nova: Nova scheduler hint injection bypasses Placement resource claims and scheduling constraints

18.0.2 - 31.3.0 and 32.0.0 - 32.2.0 and 33.0.0 - 33.0.1 PYSEC-2026-2686

OpenStack Nova vulnerable to unauthorized access to potentially sensitive data

15.1.5 - 27.4.0 and 28.0.0 - 28.2.0 and 29.0.0 - 29.1.0 PYSEC-2026-1709

OpenStack Cinder, Glance, and Nova vulnerable to arbitrary file access

15.1.5 - 29.0.2 PYSEC-2026-1708

OpenStack Cinder, glance, and Nova vulnerable to Path Traversal

15.1.5 - 24.1.1 and 25.0.0 - 25.0.1 PYSEC-2026-868

OpenStack Nova Changing vnic_type breaks compute service restart

15.1.5 - 23.2.1 and 24.0.0 - 24.1.1 and 25.0.0 - 25.0.1 PYSEC-2026-882

View all vulnerabilities for these packages

Impacted packages

nova

Timeline

Published

4 months ago

Last Modified

4 months ago