heap-buffer-overflow in ecdh sha2 nistp

heap-buffer-overflow in ecdh sha2 nistp: a task in MiMo-V2.6-RL-oss: Agentic RL Environments (MiMo RL release). AddressSanitizer: heap-buffer-overflow in function ecdh sha2 nistp in file libssh2/src/kex.c