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.
History

Wed, 09 Sep 2026 06:45:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:rhel_e4s:9.4::appstream
References

Tue, 08 Sep 2026 20:00:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel E4s
Redhat rhel Eus
CPEs cpe:/a:redhat:rhel_e4s:9.2::appstream
cpe:/a:redhat:rhel_eus:9.6::appstream
cpe:/a:redhat:rhel_eus:9.6::crb
Vendors & Products Redhat rhel E4s
Redhat rhel Eus
References

Tue, 08 Sep 2026 08:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat enterprise Linux Eus
CPEs cpe:/o:redhat:enterprise_linux_eus:10.0
Vendors & Products Redhat enterprise Linux Eus
References

Tue, 11 Aug 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 11 Aug 2026 15:45:00 +0000

Type Values Removed Values Added
First Time appeared Libvirt
Libvirt libvirt
Redhat enterprise Linux For Nvidia 26
Vendors & Products Libvirt
Libvirt libvirt
Redhat enterprise Linux For Nvidia 26

Tue, 11 Aug 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Important


Mon, 10 Aug 2026 21:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Libvirt: swtpm privilege escalation via symlink following
First Time appeared Redhat
Redhat enterprise Linux
Redhat enterprise Linux Nvidia
Weaknesses CWE-59
CPEs cpe:/a:redhat:enterprise_linux_nvidia:
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat enterprise Linux Nvidia
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2026-08-10T20:45:24.761Z

Updated: 2026-09-09T06:11:38.677Z

Reserved: 2026-07-17T13:06:13.759Z

Link: CVE-2026-63622

cve-icon Vulnrichment

Updated: 2026-08-11T17:13:30.806Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-08-10T21:17:23.550

Modified: 2026-09-09T07:16:56.637

Link: CVE-2026-63622

cve-icon Redhat

Severity : Important

Publid Date: 2026-07-30T00:00:00Z

Links: CVE-2026-63622 - Bugzilla