{"id":"CVE-2026-6554","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.","modified":"2026-09-07T03:45:14.968985267Z","published":"2026-09-05T18:51:02.338Z","database_specific":{"cwe_ids":["CWE-835"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6554.json","unresolved_ranges":[{"extracted_events":[{"fixed":"1.10.7"}],"source":"AFFECTED_FIELD"}],"cna_assigner":"Tcpdump"},"references":[{"type":"WEB","url":"https://github.com/the-tcpdump-group/libpcap/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6554.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-6554"},{"type":"FIX","url":"https://github.com/the-tcpdump-group/libpcap/commit/ff3c83475ac303c6b681c52ad0b6e14795a8e0ce"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/the-tcpdump-group/libpcap","events":[{"introduced":"0"},{"fixed":"ff3c83475ac303c6b681c52ad0b6e14795a8e0ce"}],"database_specific":{"source":"REFERENCES"}}],"versions":["libpcap-1.10.6","libpcap-1.10.5","libpcap-1.10.4","libpcap-1.10.3","libpcap-1.10.2","libpcap-1.10.1","libpcap-1.10.0","libpcap-1.10-bp","libpcap-1.9-bp","libpcap-1.9.0-rc1","libpcap-1.8.1","libpcap-1.8.0-bp","libpcap-1.7.0-bp","libpcap-0.8-bp","libpcap-0.7.1","libpcap-0.6.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-6554.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}