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CVE-2026-13622

Kubevirt: virt-handler-rhel9: kubevirt: virt-handler migration proxy follows symlinks allowing container escape to host PUBLISHED

Description (CNA)

A symlink following vulnerability was found in KubeVirt's virt-handler migration proxy. During live migration, virt-handler dials Unix sockets inside the target virt-launcher pod via /proc/<pid>/root/ paths using net.Dial() without symlink protection. These socket paths reside in qemu-owned directories writable by the virt-launcher user. An attacker with namespace edit and pods/exec permissions can replace a migration proxy socket with a symlink to the host CRI-O socket. Because virt-handler runs as root in the host mount namespace, absolute symlink targets resolve against the host filesystem, and the bidirectional io.Copy proxy relays attacker-controlled bytes to the container runtime, enabling full node compromise.

Affected (CNA)

Vendor / productVersions
Red Hat / Red Hat Container Native Virtualization 4.12unaffected 1785837722 before *
Red Hat / Red Hat Container Native Virtualization 4.13unaffected 1786346596 before *
Red Hat / Red Hat Container Native Virtualization 4.14unaffected 1786309624 before *
Red Hat / Red Hat Container Native Virtualization 4.15unaffected 1786347656 before *
Red Hat / Red Hat Container Native Virtualization 4.16unaffected 1786030071 before *
Red Hat / Red Hat Container Native Virtualization 4.17unaffected 1786348529 before *
Red Hat / Red Hat Container Native Virtualization 4.18unaffected 1786130068 before *
Red Hat / Red Hat Container Native Virtualization 4.19unaffected 1786334215 before *
Red Hat / Red Hat Container Native Virtualization 4.20unaffected 1785831334 before *
Red Hat / Red Hat Container Native Virtualization 4.21unaffected 1785829701 before *
Red Hat / Red Hat Container Native Virtualization 4.22unaffected 1785140336 before *

CWE

CWE-22

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.