CVE-2026-24708

HIGH

8.2

CVSS Score

Published: February 18, 2026 at 12:00 AM UTC

Updated: September 11, 2026 at 01:50 PM UTC

2 products affected across 2 vendorsNovaOpenStack Platform

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Severity

HIGH8.2

Exploit prediction

EPSS 0.4%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Nova · Openstack

95%

v < 30.2.231.0.0 ≤ v < 31.2.132.0.0 ≤ v < 32.1.131.0.0 32.0.0

Affected range stops below 30.2.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 31.2.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 32.1.1, so it looks safe — our inference, not a vendor statement

OpenStack Platform · Red Hatrpm

60%

All versions

Vendor states this is fixed in 0:0.2.1-6.el9ost (unaffected)

Vendor states this is fixed in 0:0.8.37-17.1.20260107141051.05dd1b2.el9ost (unaffected)

Vendor states this is fixed in 0:1.2.0-1.4.el9ost (unaffected)

Vendor states this is fixed in 0:1.8.0-17.1.20260114160833.0e94611.el9ost (unaffected)

Vendor states this is fixed in 0:1.9.1-17.1.20260318160829.0e9a6f2.el9ost (unaffected)

Vendor states this is fixed in 0:1.9.4-17.1.20260304101059.65d02f0.el9ost (unaffected)

Vendor states this is fixed in 0:11.0.1-17.1.20260306080955.63fee2c.el9ost (unaffected)

Vendor states this is fixed in 0:12.7.3-17.1.20260701150916.5d6fd1a.el9ost (unaffected)

Vendor states this is fixed in 0:14.2.1-17.1.20260803103231.61d7bd7.el9ost (unaffected)

Vendor states this is fixed in 0:14.2.3-17.1.20260206090839.40278e1.el9ost (unaffected)

Vendor states this is fixed in 0:14.3.1-17.1.20260803105013.e7c7ce3.el9ost (unaffected)

Vendor states this is fixed in 0:17.1-20260901.1.el9ost (unaffected)

Vendor states this is fixed in 0:2.27.1-17.1.20260806131309.16dbcae.el9ost (unaffected)

Vendor states this is fixed in 0:2.5.1-17.1.20260225150839.5f1cee6.el9ost (unaffected)

Vendor states this is fixed in 0:24.3.4.2-7.el9ost (unaffected)

Vendor states this is fixed in 0:3.3.1-17.1.20260603190918.8debef3.el9ost (unaffected)

Vendor states this is fixed in 0:3.4.26-9.6.el9ost (unaffected)

Vendor states this is fixed in 0:4.1.1-17.1.20260326121047.bbe5d5a.el9ost (unaffected)

Vendor states this is fixed in 0:4.3.4-17.1.20260324150947.cf69f92.el9ost (unaffected)

Vendor states this is fixed in 0:7.1.1-17.1.20260803104219.0211fa9.el9ost (unaffected)

Vendor states this is fixed in 16.2 (unaffected)

Vendor states this is fixed in 17.1 (unaffected)

Vendor states this is fixed in 18.0 (unaffected)

Vendor states this is fixed in 1:16.1.1-17.1.20260713101101.edc6d60.el9ost (unaffected)

Vendor states this is fixed in 1:17.1.1-17.1.20260721220909.c31db88.el9ost (unaffected)

Vendor states this is fixed in 1:18.2.2-17.1.20260702111621.f6b44fc.el9ost (unaffected)

Vendor states this is fixed in 1:18.6.1-17.1.20260810120959.85ff760.el9ost (unaffected)

Vendor states this is fixed in 1:19.0.2-17.1.20260630150819.54dd95d.el9ost (unaffected)

Vendor states this is fixed in 1:19.4.1-17.1.20260630130603.9b1a13e.el9ost (unaffected)

Vendor states this is fixed in 1:20.6.2-2.20260317135026.8a24acd.el8ost (unaffected)

Vendor states this is fixed in 1:23.2.3-17.1.20260810140853.2ace99d.el9ost (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (9)

Source: cverecord

https://bugs.launchpad.net/nova/+bug/2137507

Source: cverecord

https://www.openwall.com/lists/oss-security/2026/02/17/7

Source: af854a3a-2127-422b-91ae-364da2661108

https://lists.debian.org/debian-lts-announce/2026/02/msg00025.html