PT-2026-83972

net ipv6 send ns in subsys/net/ip/ipv6 nbr.c allocates a transmit net pkt for a Neighbor Solicitation. When it is called with a data packet pending on an unresolved neighbor and that neighbor's pending queue is already non-empty an NS is already outstanding, the function appends the data packet a...

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...