CVE-2026-79980

The DHCPv4 client in subsys/net/lib/dhcpv4/dhcpv4.c maintained its transaction identifier iface-config.dhcpv4.xid as a counter rather than as a per-transaction random value. It was seeded once with sysrand32get in dhcpv4startinternal, incremented by one in dhcpv4senddiscover and dhcpv4senddecline...