Refine your search

3 vulnerabilities found for crun by containers

CVE-2026-47766 (GCVE-0-2026-47766)
Vulnerability from cvelistv5
Published
2026-08-14 16:16
Modified
2026-08-14 16:32
Severity ?
5.1 (Medium) - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
CWE
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
Summary
crun is an open source OCI Container Runtime fully written in C. Prior to version 1.28, crun's default device setup opens the container rootfs `/dev` directory without `O_NOFOLLOW`. If an OCI bundle contains `rootfs/dev` as a symlink and the bundle configuration does not mount `/dev`, crun follows that symlink and creates the default device nodes and stdio symlinks at the symlink target outside the container rootfs. In a local rootful crun replay, this created fixed device nodes and symlinks outside the rootfs before crun returned failure. A pre-existing file named `ptmx` in the target directory was also replaced by crun's forced `ptmx -> pts/ptmx` symlink. Version 1.28 fixes the issue.
References
Impacted products
Vendor Product Version
containers crun Version: < 1.28
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-47766",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-14T16:32:07.749164Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-14T16:32:20.537Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "crun",
          "vendor": "containers",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.28"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "crun is an open source OCI Container Runtime fully written in C. Prior to version 1.28, crun\u0027s default device setup opens the container rootfs `/dev` directory without `O_NOFOLLOW`. If an OCI bundle contains `rootfs/dev` as a symlink and the bundle configuration does not mount `/dev`, crun follows that symlink and creates the default device nodes and stdio symlinks at the symlink target outside the container rootfs. In a local rootful crun replay, this created fixed device nodes and symlinks outside the rootfs before crun returned failure. A pre-existing file named `ptmx` in the target directory was also replaced by crun\u0027s forced `ptmx -\u003e pts/ptmx` symlink. Version 1.28 fixes the issue."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 5.1,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "LOW"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-61",
              "description": "CWE-61: UNIX Symbolic Link (Symlink) Following",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-14T16:16:37.525Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/containers/crun/security/advisories/GHSA-7vwr-4279-7gq5",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/containers/crun/security/advisories/GHSA-7vwr-4279-7gq5"
        },
        {
          "name": "https://github.com/containers/crun/releases/tag/1.28",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/containers/crun/releases/tag/1.28"
        }
      ],
      "source": {
        "advisory": "GHSA-7vwr-4279-7gq5",
        "discovery": "UNKNOWN"
      },
      "title": "crun follows rootfs /dev symlink while creating default devices"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-47766",
    "datePublished": "2026-08-14T16:16:37.525Z",
    "dateReserved": "2026-05-19T22:36:16.882Z",
    "dateUpdated": "2026-08-14T16:32:20.537Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-30892 (GCVE-0-2026-30892)
Vulnerability from cvelistv5
Published
2026-03-25 23:57
Modified
2026-03-26 18:10
Severity ?
0.0 (None) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N
CWE
  • CWE-269 - Improper Privilege Management
Summary
crun is an open source OCI Container Runtime fully written in C. In versions 1.19 through 1.26, the `crun exec` option `-u` (`--user`) is incorrectly parsed. The value `1` is interpreted as UID 0 and GID 0 when it should have been UID 1 and GID 0. The process thus runs with higher privileges than expected. Version 1.27 patches the issue.
References
Impacted products
Vendor Product Version
containers crun Version: >= 1.19, < 1.27
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-30892",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-26T18:09:51.829145Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-26T18:10:16.318Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "crun",
          "vendor": "containers",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.19, \u003c 1.27"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "crun is an open source OCI Container Runtime fully written in C. In versions 1.19 through 1.26, the  `crun exec` option `-u` (`--user`) is incorrectly parsed. The value `1` is interpreted as UID 0 and GID 0 when it should have been UID 1 and  GID 0. The process thus runs with higher privileges than expected. Version 1.27 patches the issue."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 0,
            "baseSeverity": "NONE",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-269",
              "description": "CWE-269: Improper Privilege Management",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-25T23:57:01.741Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/containers/crun/security/advisories/GHSA-4vg2-xjqj-7chj",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/containers/crun/security/advisories/GHSA-4vg2-xjqj-7chj"
        },
        {
          "name": "https://github.com/containers/crun/commit/1bd7f42446999b0e76bc3d575392e05c943b0b01",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/containers/crun/commit/1bd7f42446999b0e76bc3d575392e05c943b0b01"
        },
        {
          "name": "https://github.com/containers/crun/releases/tag/1.27",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/containers/crun/releases/tag/1.27"
        }
      ],
      "source": {
        "advisory": "GHSA-4vg2-xjqj-7chj",
        "discovery": "UNKNOWN"
      },
      "title": "Crun incorrectly parses `crun exec` option `-u`, leading to privilege escalation"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-30892",
    "datePublished": "2026-03-25T23:57:01.741Z",
    "dateReserved": "2026-03-06T00:04:56.701Z",
    "dateUpdated": "2026-03-26T18:10:16.318Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2025-24965 (GCVE-0-2025-24965)
Vulnerability from cvelistv5
Published
2025-02-19 16:46
Modified
2025-02-19 16:56
Severity ?
8.5 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Summary
crun is an open source OCI Container Runtime fully written in C. In affected versions A malicious container image could trick the krun handler into escaping the root filesystem, allowing file creation or modification on the host. No special permissions are needed, only the ability for the current user to write to the target file. The problem is fixed in crun 1.20 and all users are advised to upgrade. There are no known workarounds for this vulnerability.
References
Impacted products
Vendor Product Version
containers crun Version: < 1.20
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-24965",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-19T16:55:57.068827Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-02-19T16:56:05.966Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "crun",
          "vendor": "containers",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.20"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "crun is an open source OCI Container Runtime fully written in C. In affected versions A malicious container image could trick the krun handler into escaping the root filesystem, allowing file creation or modification on the host. No special permissions are needed, only the ability for the current user to write to the target file. The problem is fixed in crun 1.20 and all users are advised to upgrade. There are no known workarounds for this vulnerability."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.5,
            "baseSeverity": "HIGH",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "PASSIVE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-22",
              "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-02-19T16:46:31.602Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/containers/crun/security/advisories/GHSA-f42g-r5jj-qh4j",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/containers/crun/security/advisories/GHSA-f42g-r5jj-qh4j"
        },
        {
          "name": "https://github.com/containers/crun/commit/0aec82c2b686f0b1793deed43b46524fe2e8b5a7",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/containers/crun/commit/0aec82c2b686f0b1793deed43b46524fe2e8b5a7"
        },
        {
          "name": "https://github.com/containers/crun/releases/tag/1.20",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/containers/crun/releases/tag/1.20"
        }
      ],
      "source": {
        "advisory": "GHSA-f42g-r5jj-qh4j",
        "discovery": "UNKNOWN"
      },
      "title": ".krun_config.json symlink attack creates or overwrites file on the host in crun"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-24965",
    "datePublished": "2025-02-19T16:46:31.602Z",
    "dateReserved": "2025-01-29T15:18:03.209Z",
    "dateUpdated": "2025-02-19T16:56:05.966Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}