CVE-2026-0799

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Source
https://cve.org/CVERecord?id=CVE-2026-0799
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-0799.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-0799
Downstream
Related
Published
2026-09-05T18:48:39Z
Modified
2026-09-11T18:26:41Z
Severity
  • 8.7 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:H CVSS Calculator
Summary
OOBR and OOBW in libpcap before 1.10.7
Details

In BPF instructions that load/store a value from/to a scratch memory register the register index is an unsigned 32-bit integer and must not exceed 15, but libpcap BPF interpreter does not validate the value. In particular uncommon use cases a crafted filter program can cause the interpreter to try reading and writing the OS process memory in the 16GiB starting at the current stack frame on 64-bit architectures and in the entire address space on 32-bit architectures.

Database specific 
{
    "cna_assigner": "Tcpdump",
    "cwe_ids": [
        "CWE-125",
        "CWE-129",
        "CWE-787"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/0xxx/CVE-2026-0799.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
48e8960a7108e9e828f9d7bdc7e97bdab841aec7
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.10.7"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "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

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-0799.json"
vanir_signatures 
[
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "93496371634338935195273087524799309489",
                "76943592959768625155189410777882494755",
                "147893165603774244095237422567562512939",
                "189820924979698075619574152729715658249",
                "279432880534192196461142181033305033635",
                "183954662133259190767489492183233197373",
                "231126789456780287462037331576936745249",
                "299308225669883024026534814903705044323",
                "76000364153852106174084685411664720442",
                "66549812011853300350068554423228137207",
                "87623451611845008472217439363246227579",
                "265168526583298404141911923457073807916",
                "79467085003847351206664676536906302276"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-0799-0267fb7c",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/the-tcpdump-group/libpcap/commit/48e8960a7108e9e828f9d7bdc7e97bdab841aec7",
        "target": {
            "file": "bpf_filter.c"
        }
    }
]
vanir_signatures_modified 
"2026-09-11T14:11:44Z"