{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "source": "REFERENCES"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "d3f358d3cffbe1ecb94d5284b3e81f052a0adcb9"
            }
          ],
          "repo": "https://github.com/the-tcpdump-group/libpcap",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Tcpdump",
    "cwe_ids": [
      "CWE-125",
      "CWE-1285",
      "CWE-823"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31912.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "fixed": "1.10.7"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "libpcap BPF interpreter detects neither reaching the end of the filter program buffer due to lack of a return instruction nor executing a jump instruction with an offset that translates to a pointer outside of the buffer.  In particular uncommon use cases a crafted filter program can cause the interpreter to try reading the OS process memory in the 32GiB around the buffer on 64-bit architectures and in the entire address space on 32-bit architectures.",
  "id": "CVE-2026-31912",
  "modified": "2026-09-07T03:30:46.765926774Z",
  "published": "2026-09-05T18:49:41.619Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/the-tcpdump-group/libpcap/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31912.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31912"
    },
    {
      "type": "FIX",
      "url": "https://github.com/the-tcpdump-group/libpcap/commit/d3f358d3cffbe1ecb94d5284b3e81f052a0adcb9"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "OOBR in libpcap before 1.10.7"
}