CVE-2026-14258

CVE-2026-14258 affects dhcpcd’s IPv6 Neighbor Discovery Router Advertisement processing. A specially crafted IPv6 Router Advertisement with a zero-length ND option bypasses validation during packet storage and is reparsed with inadequate validation, causing the parser to enter a non-advancing loo...

CVE-2026-56114

A flaw was found in dhcpcd. An unauthenticated attacker on the same network link could exploit a one-byte stack out-of-bounds write vulnerability in the dhcp6makemessage function. By sending a specially crafted DHCPv6 ADVERTISE message with an oversized option, the attacker can write beyond a...

CVE-2026-56113

A flaw was found in dhcpcd. An unauthenticated attacker on the same network link can exploit this vulnerability by sending a specially crafted DHCPv6 RENEW reply. This can lead to a Denial of Service DoS, causing the dhcpcd daemon to crash due to a heap use-after-free vulnerability...

PT-2026-51563

Name of the Vulnerable Software and Affected Versions dhcpcd versions prior to 10.3.2 Description A one-byte stack out-of-bounds write exists in the dhcp6 makemessage function within src/dhcp6.c. Unauthenticated attackers on the same link can trigger this by serializing an oversized RFC6603 OPTIO...