libpcap BPF interpreter scratch register index flaw enables out-of-bounds memory access - Upwind | Cloud & AI Security for the Realtime Era

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CVE-2026-0799

By Ron Shemesh |

6 September 2026

libpcap BPF interpreter scratch register index flaw enables out-of-bounds memory access

libpcap BPF interpreter in bpf_filter.c (pcapint_filter_with_aux_data()) fails to validate scratch register index (must be