This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-63622 →
Categories
DEBIAN-CVE-2026-63622

A flaw was found in libvirt. A local attacker, specifically a process running as the confined `swtpm` user, could exploit a symlink-following vulnerab...

Original description

The description as published by the source.

A flaw was found in libvirt. A local attacker, specifically a process running as the confined swtpm user, could exploit a symlink-following vulnerability in the virFileChownFiles() function. By planting a symbolic link within the swtpm state directory, the attacker could trick the root-level libvirt daemon into changing the ownership of an arbitrary file to the swtpm user. This allows for privilege escalation from the swtpm sandbox to root-level file ownership control.

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

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