CVE-2026-7374

Summary

A flaw was found in KubeVirt's virt-handler component. This vulnerability allows an authenticated OpenShift user with edit permissions in a single namespace to exploit improper symlink validation when connecting to virtual machine console sockets. By replacing the console socket with a symlink to the host's container runtime (CRI-O) socket, an attacker can hijack virt-handler's privileged connection. This enables the attacker to access any Unix socket on the host, potentially leading to full control of the node and the entire cluster.

Affected Software

VendorProductVersion RangeStatus
Red HatRed Hat Container Native Virtualization 4.121779375376 < *unaffected
Red HatRed Hat Container Native Virtualization 4.131778999881 < *unaffected
Red HatRed Hat Container Native Virtualization 4.141779321599 < *unaffected
Red HatRed Hat Container Native Virtualization 4.151778859977 < *unaffected
Red HatRed Hat Container Native Virtualization 4.161778861274 < *unaffected
Red HatRed Hat Container Native Virtualization 4.171779174925 < *unaffected
Red HatRed Hat Container Native Virtualization 4.181778887155 < *unaffected
Red HatRed Hat Container Native Virtualization 4.191779289071 < *unaffected
Red HatRed Hat Container Native Virtualization 4.201779288737 < *unaffected
Red HatRed Hat Container Native Virtualization 4.211779420069 < *unaffected

Weaknesses

  • CWE-59: Improper Link Resolution Before File Access ('Link Following')

Workarounds

Update cluster RBAC to not allow exec into virt-launcher pods.

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

Additional References

References