CVE-2026-7656 Broken IPv6 Neighbor Discovery input validation allows spoofed RA/NS/NA acceptance in Zephyr net stack

The IPv6 Neighbor Discovery handlers in subsys/net/ip/ipv6nbr.c handlerainput, handlensinput, handlenainput used an incorrect boolean expression that combined the RFC 4861 validity checks with the ICMPv6 code check using the wrong operator precedence: the form was 'length/hop/source/target checks...

CVE-2026-56116

A flaw was found in dhcpcd. An unauthenticated attacker on the same network link can exploit a memory leak vulnerability in the IPv6 Router Advertisement route information handling. By repeatedly sending specially crafted Router Advertisements with a zero lifetime, the attacker can cause the syst...