CVE-2011-1935: Tcpdump Libpcap

Critical severity, CVSS 9.8. EPSS: 3.6% chance of exploitation in the next 30 days.

pcap-linux.c in libpcap 1.1.1 before commit ea9432fabdf4b33cbc76d9437200e028f1c47c93 when snaplen is set may truncate packets, which might allow remote attackers to send arbitrary data while avoiding detection via crafted packets.

Affected products

• Tcpdump Libpcap: from 1.1.1, before 1.2.1 (fixed in 1.2.1)

Published 2017-10-20. Last modified 2026-06-16.