CVE-2025-66646

CVE-2025-66646 affects RIOT OS, specifically in the IPv6 fragmentation reassembly (gnrc_ipv6_ext_frag). When a fragmented IPv6 packet with fragment offset 0 and an empty payload is processed, the payload pointer is set to NULL but the code still copies into the reassembly buffer, causing a NULL p...

CVE-2025-66646: NULL Pointer Dereference

RIOT is an open-source microcontroller operating system, designed to match the requirements of Internet of Things IoT devices and other embedded devices. A vulnerability was discovered in the IPv6 fragmentation reassembly implementation of RIOT OS v2025.07. When receiving an fragmented IPv6 packe...

CVE-2025-66647: Buffer Copy without Checking Size of Input

RIOT is an open-source microcontroller operating system, designed to match the requirements of Internet of Things IoT devices and other embedded devices. A vulnerability was discovered in the IPv6 fragmentation reassembly implementation of RIOT OS v2025.07. When copying the contents of the first...