This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-63623 →

DEBIAN-CVE-2026-63623

A flaw was found in libvirt. During storage volume clone or convert operations, newly created volume images were temporarily world-readable. This was...

Original description

The description as published by the source.

A flaw was found in libvirt. During storage volume clone or convert operations, newly created volume images were temporarily world-readable. This was caused by the qemu-img utility running with overly permissive file creation settings, allowing any local user to read the full guest disk contents. This vulnerability could lead to sensitive information disclosure from guest virtual machines.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 libvirt

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 libvirt

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"11.3.0-3+deb13u3"}]}]

Debian:14 libvirt

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"12.6.0-1"}]}]

References

advisory security-tracker.debian.org