Use After Free Affecting qemu package, versions <1:5.2+dfsg-2ubuntu1


Severity

Recommended
0.0
low
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.35% (28th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-UBUNTU2510-QEMU-15733708
  • published21 Mar 2026
  • disclosed25 Sept 2020

Introduced: 25 Sep 2020

CVE-2020-25084  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Ubuntu:25.10 qemu to version 1:5.2+dfsg-2ubuntu1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu package and not the qemu package as distributed by Ubuntu. See How to fix? for Ubuntu:25.10 relevant fixed versions and status.

QEMU 5.0.0 has a use-after-free in hw/usb/hcd-xhci.c because the usb_packet_map return value is not checked.

CVSS Base Scores

version 3.1