libpcap vulnerabilities

2 known vulnerabilities in libpcap from The Tcpdump Group. 2 are rated high or critical. Each entry lists the affected versions and the release that fixes it, where the vendor has published one.

Latest first

• 7.5 High severity

  libpcap: Loop with Unreachable Exit Condition

  CVE-2026-6554Sep 5, 2026The Tcpdump Group

  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. A crafted filter program or the 'protochain' primitive used on a crafted n

• 8.7 High severity

  libpcap: Out-of-bounds Read

  CVE-2026-0799Sep 5, 2026The Tcpdump Group

  In BPF instructions that load/store a value from/to a scratch memory register the register index is an unsigned 32-bit integer and must not exceed 15, but libpcap BPF interpreter does not validate the value. In particular uncommon use cases a crafted filter pr