{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-31912",
        "assignerOrgId": "cfdbb673-b408-4d03-89c1-c3d73ed80896",
        "state": "PUBLISHED",
        "assignerShortName": "Tcpdump",
        "dateReserved": "2026-03-10T09:30:50.972Z",
        "datePublished": "2026-09-05T18:49:41.619Z",
        "dateUpdated": "2026-09-08T18:21:58.216Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "defaultStatus": "unaffected",
                    "modules": [
                        "BPF interpreter"
                    ],
                    "product": "libpcap",
                    "programFiles": [
                        "bpf_filter.c"
                    ],
                    "programRoutines": [
                        {
                            "name": "pcapint_filter_with_aux_data()"
                        }
                    ],
                    "repo": "https://github.com/the-tcpdump-group/libpcap/",
                    "vendor": "The Tcpdump Group",
                    "versions": [
                        {
                            "lessThan": "1.10.7",
                            "status": "affected",
                            "version": "0",
                            "versionType": "semver"
                        }
                    ]
                }
            ],
            "configurations": [
                {
                    "lang": "en",
                    "value": "The problem is specific to applications that use pcap_offline_filter() or bpf_filter() with an externally-supplied compiled filter program without validating the program first."
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "type": "finder",
                    "value": "Denis Ovsienko"
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "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."
                }
            ],
            "exploits": [
                {
                    "lang": "en",
                    "value": "A functional exploit exists."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "LOCAL",
                        "availabilityImpact": "HIGH",
                        "baseScore": 5.5,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "LOW",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                        "version": "3.1"
                    },
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ]
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-1285",
                            "description": "CWE-1285 Improper Validation of Specified Index, Position, or Offset in Input",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-823",
                            "description": "CWE-823 Use of Out-of-range Pointer Offset",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-125",
                            "description": "CWE-125 Out-of-bounds Read",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "cfdbb673-b408-4d03-89c1-c3d73ed80896",
                "shortName": "Tcpdump",
                "dateUpdated": "2026-09-05T18:49:41.619Z"
            },
            "references": [
                {
                    "tags": [
                        "patch"
                    ],
                    "url": "https://github.com/the-tcpdump-group/libpcap/commit/d3f358d3cffbe1ecb94d5284b3e81f052a0adcb9"
                }
            ],
            "solutions": [
                {
                    "lang": "en",
                    "value": "Upgrade to libpcap 1.10.7 and migrate from bpf_filter() to pcap_offline_filter()."
                }
            ],
            "source": {
                "discovery": "INTERNAL"
            },
            "title": "OOBR in libpcap before 1.10.7",
            "x_generator": {
                "engine": "cvelib 1.8.0"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-08T18:21:42.914503Z",
                                "id": "CVE-2026-31912",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-09-08T18:21:58.216Z"
                }
            }
        ]
    }
}