CVE-2026-6244

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Source
https://cve.org/CVERecord?id=CVE-2026-6244
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-6244.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-6244
Downstream
Related
Published
2026-09-05T18:50:39Z
Modified
2026-09-18T08:13:56Z
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
division by zero in libpcap before 1.10.7
Details

libpcap BPF interpreter for the 'div #k' and 'mod #k' ALU instructions does not check whether the immediate value is zero. In particular uncommon use cases a crafted filter program can cause a division by zero.

Database specific 
{
    "cna_assigner":  "Tcpdump",
    "cwe_ids":  [
        "CWE-369"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6244.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
98bb921b141aa642faedbf2ac510541c76499a19
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/osv-test-cve-osv-conversion/osv-output/CVE-2026-6244.json"
vanir_signatures 
[
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "159313938032546212003684998121585109708",
                "294592371463506861657059557635689985636",
                "55906513978301735793072472780949503808",
                "35386386873072048673794717237347212394",
                "331548429278841729283552281008994874665",
                "189893898963607412963387224478886028236",
                "277006527610900787260746397055557721780"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2026-6244-4b8a6362",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/the-tcpdump-group/libpcap/commit/98bb921b141aa642faedbf2ac510541c76499a19",
        "target":  {
            "file":  "bpf_filter.c"
        }
    }
]
vanir_signatures_modified 
"2026-09-18T08:13:56Z"