{"id":"CVE-2026-31911","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.","modified":"2026-09-07T08:07:18.841889Z","published":"2026-09-05T18:50:03.936Z","database_specific":{"cna_assigner":"Tcpdump","cwe_ids":["CWE-617"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31911.json","unresolved_ranges":[{"extracted_events":[{"fixed":"1.10.7"}],"source":"AFFECTED_FIELD"}]},"references":[{"type":"WEB","url":"https://github.com/the-tcpdump-group/libpcap/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31911.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31911"},{"type":"FIX","url":"https://github.com/the-tcpdump-group/libpcap/commit/a715bcdde830299cba4171514385cb17ec19b6e9"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/the-tcpdump-group/libpcap","events":[{"introduced":"0"},{"fixed":"a715bcdde830299cba4171514385cb17ec19b6e9"}],"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-2026-31911.json","vanir_signatures_modified":"2026-09-07T08:07:18Z","vanir_signatures":[{"deprecated":false,"digest":{"line_hashes":["86262644677020068835916774611357606904","53183899399401094662467573767435194543","6172255756445205679427798395124521120","220662919273459344222828464253672196252"],"threshold":0.9},"id":"CVE-2026-31911-696dd94f","signature_type":"Line","signature_version":"v1","source":"https://github.com/the-tcpdump-group/libpcap/commit/a715bcdde830299cba4171514385cb17ec19b6e9","target":{"file":"bpf_filter.c"}}]}}],"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"}]}