Link Following Affecting libvirt package, versions <0:4.5.0-36.el7_9.7


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.14% (3rd percentile)

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  • Snyk IDSNYK-RHEL7-LIBVIRT-20124127
  • published24 Sept 2026
  • disclosed30 Jul 2026

Introduced: 30 Jul 2026

CVE-2026-63622  (opens in a new tab)
CWE-59  (opens in a new tab)

How to fix?

Upgrade RHEL:7 libvirt to version 0:4.5.0-36.el7_9.7 or higher.
This issue was patched in RHSA-2026:69114.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libvirt package and not the libvirt package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1