CVE-2026-31911

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-31911
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31911.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-31911
Downstream
Published
2026-09-05T18:50:03.936Z
Modified
2026-09-07T08:07:18.841889Z
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
abort() in libpcap before 1.10.7 on an invalid BPF opcode
Details

libpcap BPF interpreter calls abort() if it encounters a BPF instruction that has an invalid opcode. In particular uncommon use cases a crafted filter program can terminate the OS process.

Database specific 
{
    "cwe_ids": [
        "CWE-617"
    ],
    "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-2026-31911.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
a715bcdde830299cba4171514385cb17ec19b6e9
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": "bpf_filter.c"
        },
        "deprecated": false,
        "id": "CVE-2026-31911-696dd94f",
        "signature_version": "v1",
        "digest": {
            "line_hashes": [
                "86262644677020068835916774611357606904",
                "53183899399401094662467573767435194543",
                "6172255756445205679427798395124521120",
                "220662919273459344222828464253672196252"
            ],
            "threshold": 0.9
        },
        "signature_type": "Line",
        "source": "https://github.com/the-tcpdump-group/libpcap/commit/a715bcdde830299cba4171514385cb17ec19b6e9"
    }
]
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31911.json"
vanir_signatures_modified 
"2026-09-07T08:07:18Z"