{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "fixed": "3cd514031371d8aeeaf2048aa10103e02831aaa9"
                  }
                ],
                "source": "DESCRIPTION"
              },
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "last_affected": "3cd514031371d8aeeaf2048aa10103e02831aaa9"
                  }
                ],
                "source": "DESCRIPTION"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3cd514031371d8aeeaf2048aa10103e02831aaa9"
            }
          ],
          "repo": "https://git.savannah.gnu.org/cgit/cpio.git",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "CERT-PL",
    "cwe_ids": [
      "CWE-789"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/66xxx/CVE-2026-66485.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "range": [
              {
                "last_affected": "2.15"
              }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
          }
        ]
      },
      {
        "extracted_events": [
          {
            "range": [
              {
                "last_affected": "2.15"
              }
            ],
            "source": "CPE_FIELD",
            "strategy": "CPEApplicability"
          }
        ]
      }
    ]
  },
  "details": "GNU cpio is vulnerable to an uncontrolled memory allocation in the make_path function at src/makepath.c. The function uses alloca to allocate stack memory based on the length of argpath, which is derived from an archive-controlled pathname during extraction. A malicious cpio archive containing a sufficiently long nested pathname causes an unbounded stack allocation, resulting in a stack overflow and crash of the cpio process. An attacker who can supply a crafted cpio archive to a victim who extracts it can cause a denial of service.\n\nThis issue has been fixed in commit 3cd514031371d8aeeaf2048aa10103e02831aaa9",
  "id": "CVE-2026-66485",
  "modified": "2026-10-26T02:30:51.757909208Z",
  "published": "2026-08-10T10:25:34.337Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://cert.pl/en/posts/2026/08/CVE-2026-66484"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/66xxx/CVE-2026-66485.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-66485"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.savannah.gnu.org/cgit/cpio.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Uncontrolled Memory Allocation in GNU cpio"
}