Description
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 range(s) involved to be silently dropped as duplicates. Only the first of such rules is actually loaded into pf. Ranges expressed using the address[/mask-bits] syntax were not affected. Some keywords representing actions taken on a packet-matching rule, such as 'log', 'return tll', or 'dnpipe', may suffer from the same issue. It is unlikely that users have such configurations, as these rules would always be redundant. Affected rules are silently ignored, which can lead to unexpected behaviour including over- and underblocking.
INFO
Published Date :
2026-04-01T06:18:52.097Z
Last Modified :
2026-04-01T14:56:02.208Z
Source :
freebsd
AFFECTED PRODUCTS
The following products are affected by CVE-2026-4748 vulnerability.
| Vendors | Products |
|---|---|
| Freebsd |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2026-4748.
