CVE-2026-6554

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Source
https://cve.org/CVERecord?id=CVE-2026-6554
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-6554.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-6554
Downstream
Published
2026-09-05T18:51:02.338Z
Modified
2026-09-07T03:45:14.968985267Z
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
infinte loop in libpcap before 1.10.7
Details

libpcap BPF interpreter treats the offset in the 'ja L' BPF instruction as a signed integer to implement looping via backward jumps, but it does not limit the number of loop iterations. In particular uncommon use cases a crafted filter program can cause the interpreter to loop infinitely.

Database specific 
{
    "cwe_ids": [
        "CWE-835"
    ],
    "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/2026/6xxx/CVE-2026-6554.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
ff3c83475ac303c6b681c52ad0b6e14795a8e0ce
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

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-6554.json"