CVE-2026-56113

dhcpcd through 10.3.2, fixed in commit 5733d3c, contains a heap use-after-free vulnerability that allows unauthenticated same-link attackers to crash the daemon by sending a crafted DHCPv6 RENEW reply with RFC6603 OPTIONPDEXCLUDE and both preferred and valid lifetimes set to zero. Attackers actin...

CVE-2026-56113

Summary of CVE-2026-56113 : The dhcpcd project (up to version 10.3.2) contains a heap use-after-free vulnerability in the DHCPv6 path. Specifically, in dhcp6_deprecateaddrs(), when processing a crafted DHCPv6 RENEW reply (using RFC6603 OPTION_PD_EXCLUDE) with both the preferred and valid lifetime...

CVE-2026-56113 dhcpcd Heap Use-After-Free in dhcp6_deprecateaddrs via DHCPv6 RENEW

dhcpcd through 10.3.2, fixed in commit 5733d3c, contains a heap use-after-free vulnerability that allows unauthenticated same-link attackers to crash the daemon by sending a crafted DHCPv6 RENEW reply with RFC6603 OPTIONPDEXCLUDE and both preferred and valid lifetimes set to zero. Attackers actin...