CVE-2011-1935: pcap-linux.c in libpcap 1.1.1 before commit ea9432fabdf4b33cbc76d9437200e028f1c47c93 when snaplen is set ma...

Security readout for executives and security teams

CVE-2011-1935 is a libpcap packet-capture flaw. When a snaplen value is set, libpcap may truncate captured packets incorrectly. That can reduce visibility for tools that depend on libpcap, allowing crafted network traffic to be missed or misinterpreted by monitoring. Exposure is most likely on Linux systems running affected libpcap code paths with snaplen configured, especially network capture or monitoring workflows. The source bundle does not provide complete product, version, or package matrices beyond libpcap 1.1.1 before the named commit. Handle as a visibility-risk maintenance item, not an emergency based on available evidence. Prioritize environments where libpcap supports security monitoring or compliance capture, because missed traffic can weaken detection assurance. Mitigation focus: Identify systems and tools using libpcap on Linux.; Upgrade to a libpcap package containing the upstream fix.; For Debian-derived systems, check Debian tracker and package status..

Prepared

Jun 12, 2026, 20:36 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.