FKIE_CVE-2026-13622

Vulnerability from fkie_nvd - Published: 2026-08-12 21:17 - Updated: 2026-08-16 13:16
Severity
8.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Summary
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.
References
secalert@redhat.comhttps://access.redhat.com/errata/RHEA-2026:53670
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:51031
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:53655
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:53671
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:53684
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:53721
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:53728
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:53763
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:53797
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:53826
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:53838
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2026-13622
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2494142
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "cpes": [
            "cpe:/a:redhat:container_native_virtualization:4.12::el8"
          ],
          "defaultStatus": "affected",
          "packageName": "container-native-virtualization/virt-handler",
          "product": "Red Hat Container Native Virtualization 4.12",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "1785837722",
              "versionType": "rpm"
            }
          ]
        },
        {
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          ],
          "defaultStatus": "affected",
          "packageName": "container-native-virtualization/virt-handler-rhel9",
          "product": "Red Hat Container Native Virtualization 4.13",
          "vendor": "Red Hat",
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              "status": "unaffected",
              "version": "1786346596",
              "versionType": "rpm"
            }
          ]
        },
        {
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          "cpes": [
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          ],
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          "packageName": "container-native-virtualization/virt-handler-rhel9",
          "product": "Red Hat Container Native Virtualization 4.14",
          "vendor": "Red Hat",
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              "status": "unaffected",
              "version": "1786309624",
              "versionType": "rpm"
            }
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        {
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          "packageName": "container-native-virtualization/virt-handler-rhel9",
          "product": "Red Hat Container Native Virtualization 4.15",
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          ]
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          "packageName": "container-native-virtualization/virt-handler-rhel9",
          "product": "Red Hat Container Native Virtualization 4.16",
          "vendor": "Red Hat",
          "versions": [
            {
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              "status": "unaffected",
              "version": "1786030071",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "cpes": [
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          "packageName": "container-native-virtualization/virt-handler-rhel9",
          "product": "Red Hat Container Native Virtualization 4.17",
          "vendor": "Red Hat",
          "versions": [
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              "version": "1786348529",
              "versionType": "rpm"
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        },
        {
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "cpes": [
            "cpe:/a:redhat:container_native_virtualization:4.18::el9"
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          "product": "Red Hat Container Native Virtualization 4.18",
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          ],
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          "packageName": "container-native-virtualization/virt-handler-rhel9",
          "product": "Red Hat Container Native Virtualization 4.19",
          "vendor": "Red Hat",
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              "versionType": "rpm"
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          "product": "Red Hat Container Native Virtualization 4.2",
          "vendor": "Red Hat",
          "versions": [
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              "status": "unaffected",
              "version": "1785831334",
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        },
        {
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "cpes": [
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          "defaultStatus": "affected",
          "packageName": "container-native-virtualization/virt-handler-rhel9",
          "product": "Red Hat Container Native Virtualization 4.21",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "1785829701",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "cpes": [
            "cpe:/a:redhat:container_native_virtualization:4.22::el9"
          ],
          "defaultStatus": "affected",
          "packageName": "container-native-virtualization/virt-handler-rhel9",
          "product": "Red Hat Container Native Virtualization 4.22",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "1785140336",
              "versionType": "rpm"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A symlink following vulnerability was found in KubeVirt\u0027s virt-handler migration proxy. During live migration, virt-handler dials Unix sockets inside the target virt-launcher pod via /proc/\u003cpid\u003e/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."
    }
  ],
  "id": "CVE-2026-13622",
  "lastModified": "2026-08-16T13:16:56.270",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.0,
        "impactScore": 6.0,
        "source": "secalert@redhat.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-13622",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-13T19:21:32.127174Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-12T21:17:35.630",
  "references": [
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHEA-2026:53670"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:51031"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:53655"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:53671"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:53684"
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    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:53721"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:53728"
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    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:53763"
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    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:53797"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:53826"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:53838"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/security/cve/CVE-2026-13622"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2494142"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ],
      "source": "secalert@redhat.com",
      "type": "Secondary"
    }
  ]
}



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