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 安全漏洞

FreeBSD is a Unix-like operating system developed by the FreeBSD Foundation. There is a security vulnerability in FreeBSD, which stems from issues with hash calculations. This vulnerability may cause rules that use address-range syntax to be silently discarded, resulting in unexpected behaviors...

CVE-2026-4748: Use of Incorrect Operator

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-SA-26:09.pf

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-26:09.pf Security Advisory The FreeBSD Project Topic: pf silently ignores certain rules Category: core Module: pf Announced: 2026-03-25 Credits: Michael Gmelin...