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8.8 High

CVE-2026-13622 A symlink following vulnerability was found in KubeVirt's virt-handler migration proxy

Description

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 products and versions

Product Affected versions Fixed in
Red Hat OpenShift Virtualization 4 Versions not published
Red Hat Container Native Virtualization 4.13 1786346596 earliest → < 1786346596 1786346596
Red Hat Container Native Virtualization 4.14 1786309624 earliest → < 1786309624 1786309624
Red Hat Container Native Virtualization 4.17 1786348529 earliest → < 1786348529 1786348529
Red Hat Container Native Virtualization 4.18 1786130068 earliest → < 1786130068 1786130068
Red Hat Container Native Virtualization 4.20 1785831334 earliest → < 1785831334 1785831334
Red Hat Container Native Virtualization 4.22 1785140336 earliest → < 1785140336 1785140336
Red Hat Container Native Virtualization 4.12 1785837722 earliest → < 1785837722 1785837722
Red Hat Container Native Virtualization 4.15 1786347656 earliest → < 1786347656 1786347656
Show the 4 other branches
Product Affected versions Fixed in
Red Hat Container Native Virtualization 4.16 1786030071 earliest → < 1786030071 1786030071
Red Hat Container Native Virtualization 4.19 1786334215 earliest → < 1786334215 1786334215
Red Hat Container Native Virtualization 4.21 1785829701 earliest → < 1785829701 1785829701
Red Hat Container Native Virtualization 4.2 1785831334 earliest → < 1785831334 1785831334

References

Timeline

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