← CVE Intelligence

CVE-2026-63622

Libvirt: swtpm privilege escalation via symlink following PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Red Hat / Red Hat Enterprise Linux 10unaffected 0:11.10.0-12.9.el10_2 before *
Red Hat / Red Hat Enterprise Linux 10.0 Extended Update Supportunaffected 0:10.10.0-8.11.el10_0 before *
Red Hat / Red Hat Enterprise Linux 7 Extended Lifecycle Supportunaffected 0:4.5.0-36.el7_9.7 before *
Red Hat / Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Supportunaffected 8040020260916092751.522a0ee4 before *
Red Hat / Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-Onunaffected 8040020260916092751.522a0ee4 before *
Red Hat / Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Supportunaffected 8060020260910092451.ad008a3a before *
Red Hat / Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-Onunaffected 8060020260910092451.ad008a3a before *
Red Hat / Red Hat Enterprise Linux 8.8 Telecommunications Update Serviceunaffected 8080020260910092120.63b34585 before *
Red Hat / Red Hat Enterprise Linux 8.8 Update Services for SAP Solutionsunaffected 8080020260910092120.63b34585 before *
Red Hat / Red Hat Enterprise Linux 9unaffected 0:11.10.0-12.7.el9_8 before *
Red Hat / Red Hat Enterprise Linux 9.2 Update Services for SAP Solutionsunaffected 0:9.0.0-10.16.el9_2 before *
Red Hat / Red Hat Enterprise Linux 9.4 Update Services for SAP Solutionsunaffected 0:10.0.0-6.23.el9_4 before *
Red Hat / Red Hat Enterprise Linux 9.6 Extended Update Supportunaffected 0:10.10.0-7.18.el9_6 before *
Red Hat / Red Hat Enterprise Linux 6unaffected
Red Hat / Red Hat Enterprise Linux 8affected
Red Hat / Red Hat Enterprise Linux for NVIDIA 26unknown

CWE

CWE-59

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.