SB2026042904 - Red Hat OpenStackServices on OpenShift 18 update for openstack-nova

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Main Vulnerability Database SB2026042904

SB2026042904 - Red Hat OpenStackServices on OpenShift 18 update for openstack-nova

Published: April 29, 2026

Security Bulletin ID SB2026042904
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Allocation of resources without limits or throttling (CVE-ID: CVE-2026-24708)

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to perform a denial of service attack.

The vulnerability exists due to the application calls qemu-img without format restrictions for resize. A local user can write malicious QCOW header to a root or ephemeral disk and then trigger a resize to 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.


Remediation

Install update from vendor's website.

References