{
  "affected": [
    {
      "affectedData": [
        {
          "product": "runc",
          "vendor": "opencontainers",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.3.6"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.4.0-rc.1, \u003c 1.4.3"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.5.0-rc.1, \u003c 1.5.0-rc.3"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:linuxfoundation:runc:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "66E8E6E0-E0A3-4C49-A418-D1CA76D0FAEF",
              "versionEndExcluding": "1.3.6",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:linuxfoundation:runc:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "3692DBD2-9876-4C63-8C93-2262F86EF95A",
              "versionEndExcluding": "1.4.3",
              "versionStartIncluding": "1.4.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:linuxfoundation:runc:1.5.0:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "2FEAC66F-F2B2-4B23-8061-3B8B44EAECD8",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:linuxfoundation:runc:1.5.0:rc2:*:*:*:*:*:*",
              "matchCriteriaId": "ED7FCB70-52A0-42C3-A10F-247FEF7AEC08",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "runc is a CLI tool for spawning and running containers according to the OCI specification. In versions prior to 1.3.6, 1.4.0-rc.1, 1.4.0-rc.12, 1.5.0-rc.1, and 1.5.0-rc.1, when setting up the container rootfs, setupPtmx and setupDevSymlinks call os.Remove and os.Symlink with a filepath.Join string which allow an image with /dev as a symlink to trick runc into deleting files called ptmx on the host or creating a hardcoded set of symlinks with specific names and targets in an arbitrary pre-existing host directory. This issue is not exploitable under Docker, because Docker creates a top-level read-only layer that masks any malicious /dev\u00a0symlink present in the container image \u2014 unlike some other Linux container tooling, whose higher-level runtimes built on runc remain exposed to exploitation via a malicious image. This issue has been fixed in versions 1.3.6, 1.4.3 and 1.5.0."
    }
  ],
  "id": "CVE-2026-41579",
  "lastModified": "2026-07-02T19:36:49.830",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 3.3,
          "baseSeverity": "LOW",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 1.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-41579",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-07-01T13:34:05.348945Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-07-01T02:17:00.193",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/opencontainers/runc/commit/864db8042dbb"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Mitigation",
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://github.com/opencontainers/runc/security/advisories/GHSA-xjvp-4fhw-gc47"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-61"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}