CVE-2026-4748 pf silently ignores certain rules

A regression in the way hashes were calculated caused rules containing the address range syntax x.x.x.x - y.y.y.y that only differ in the address ranges involved to be silently dropped as duplicates. Only the first of such rules is actually loaded into pf. Ranges expressed using the...

FreeBSD Security Advisory - FreeBSD-SA-26:09.pf

FreeBSD Security Advisory - pf silently ignores certain rules. A regression in the way hashes were calculated caused rules containing the address range syntax x.x.x.x - y.y.y.y that only differ in the address ranges involved to be silently dropped as duplicates. Only the first of such rules is...