CVE-2026-31912

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Source
https://cve.org/CVERecord?id=CVE-2026-31912
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31912.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-31912
Downstream
Published
2026-09-05T18:49:41.619Z
Modified
2026-09-07T08:07:19.155488Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
OOBR in libpcap before 1.10.7
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.

Database specific 
{
    "cwe_ids": [
        "CWE-125",
        "CWE-1285",
        "CWE-823"
    ],
    "cna_assigner": "Tcpdump",
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "fixed": "1.10.7"
                }
            ]
        }
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31912.json"
}
References

Affected packages

Git / github.com/the-tcpdump-group/libpcap

Affected ranges

Type
GIT
Repo
https://github.com/the-tcpdump-group/libpcap
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
d3f358d3cffbe1ecb94d5284b3e81f052a0adcb9
Database specific
Show details 
{
    "source": "REFERENCES"
}

Affected versions

libpcap-0.*
libpcap-0.6.1
libpcap-0.7.1
libpcap-0.8-bp
libpcap-1.*
libpcap-1.10-bp
libpcap-1.10.0
libpcap-1.10.1
libpcap-1.10.2
libpcap-1.10.3
libpcap-1.10.4
libpcap-1.10.5
libpcap-1.10.6
libpcap-1.7.0-bp
libpcap-1.8.0-bp
libpcap-1.8.1
libpcap-1.9-bp
libpcap-1.9.0-rc1

Database specific

vanir_signatures 
[
    {
        "target": {
            "file": "pcap-linux.c"
        },
        "deprecated": false,
        "id": "CVE-2026-31912-02036a0e",
        "signature_version": "v1",
        "digest": {
            "line_hashes": [
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            ],
            "threshold": 0.9
        },
        "signature_type": "Line",
        "source": "https://github.com/the-tcpdump-group/libpcap/commit/d3f358d3cffbe1ecb94d5284b3e81f052a0adcb9"
    },
    {
        "target": {
            "file": "bpf_filter.c",
            "function": "pcapint_validate_filter"
        },
        "deprecated": false,
        "id": "CVE-2026-31912-0dc1d4d6",
        "signature_version": "v1",
        "digest": {
            "function_hash": "36318253481447139488866053184702116809",
            "length": 1377.0
        },
        "signature_type": "Function",
        "source": "https://github.com/the-tcpdump-group/libpcap/commit/d3f358d3cffbe1ecb94d5284b3e81f052a0adcb9"
    },
    {
        "target": {
            "file": "pcap-bt-monitor-linux.c"
        },
        "deprecated": false,
        "id": "CVE-2026-31912-1b5382b4",
        "signature_version": "v1",
        "digest": {
            "line_hashes": [
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            ],
            "threshold": 0.9
        },
        "signature_type": "Line",
        "source": "https://github.com/the-tcpdump-group/libpcap/commit/d3f358d3cffbe1ecb94d5284b3e81f052a0adcb9"
    },
    {
        "target": {
            "file": "bpf_filter.c",
            "function": "bpf_filter"
        },
        "deprecated": false,
        "id": "CVE-2026-31912-1ded6ca2",
        "signature_version": "v1",
        "digest": {
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            "length": 144.0
        },
        "signature_type": "Function",
        "source": "https://github.com/the-tcpdump-group/libpcap/commit/d3f358d3cffbe1ecb94d5284b3e81f052a0adcb9"
    },
    {
        "target": {
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        },
        "deprecated": false,
        "id": "CVE-2026-31912-1e46ed9b",
        "signature_version": "v1",
        "digest": {
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    },
    {
        "target": {
            "file": "pcap-haiku.c"
        },
        "deprecated": false,
        "id": "CVE-2026-31912-33421c31",
        "signature_version": "v1",
        "digest": {
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    },
    {
        "target": {
            "file": "pcap-dag.c",
            "function": "dag_read"
        },
        "deprecated": false,
        "id": "CVE-2026-31912-35ef6496",
        "signature_version": "v1",
        "digest": {
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            "length": 6859.0
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        "source": "https://github.com/the-tcpdump-group/libpcap/commit/d3f358d3cffbe1ecb94d5284b3e81f052a0adcb9"
    },
    {
        "target": {
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        "deprecated": false,
        "id": "CVE-2026-31912-457bcb75",
        "signature_version": "v1",
        "digest": {
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    },
    {
        "target": {
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        },
        "deprecated": false,
        "id": "CVE-2026-31912-47175a45",
        "signature_version": "v1",
        "digest": {
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    },
    {
        "target": {
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            "function": "pcap_read_npf"
        },
        "deprecated": false,
        "id": "CVE-2026-31912-4bc7ec71",
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    },
    {
        "target": {
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        },
        "deprecated": false,
        "id": "CVE-2026-31912-590b5600",
        "signature_version": "v1",
        "digest": {
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    },
    {
        "target": {
            "file": "pcap-bt-linux.c"
        },
        "deprecated": false,
        "id": "CVE-2026-31912-59487ef6",
        "signature_version": "v1",
        "digest": {
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    },
    {
        "target": {
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            "function": "bt_read_linux"
        },
        "deprecated": false,
        "id": "CVE-2026-31912-5f020a30",
        "signature_version": "v1",
        "digest": {
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            "length": 1668.0
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        "source": "https://github.com/the-tcpdump-group/libpcap/commit/d3f358d3cffbe1ecb94d5284b3e81f052a0adcb9"
    },
    {
        "target": {
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            "function": "snf_read"
        },
        "deprecated": false,
        "id": "CVE-2026-31912-612628e0",
        "signature_version": "v1",
        "digest": {
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    },
    {
        "target": {
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            "function": "usb_read_linux_bin"
        },
        "deprecated": false,
        "id": "CVE-2026-31912-61a0e279",
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    {
        "target": {
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            "function": "pcap_dpdk_dispatch"
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        "deprecated": false,
        "id": "CVE-2026-31912-675ad48d",
        "signature_version": "v1",
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    },
    {
        "target": {
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        },
        "deprecated": false,
        "id": "CVE-2026-31912-900feb48",
        "signature_version": "v1",
        "digest": {
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            "file": "pcap-int.h"
        },
        "deprecated": false,
        "id": "CVE-2026-31912-9fbf08ea",
        "signature_version": "v1",
        "digest": {
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        "source": "https://github.com/the-tcpdump-group/libpcap/commit/d3f358d3cffbe1ecb94d5284b3e81f052a0adcb9"
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]
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31912.json"
vanir_signatures_modified 
"2026-09-07T08:07:19Z"