DEBIAN-CVE-2026-118375: High severity debian/llama.cpp vulnerability

llama.cpp b8841 before b11865 contains an out-of-bounds write vulnerability in the ggml-rpc RDMA transport rdmarecv() function that allows unauthenticated peers to overflow the rpc-server stack. Attackers advertising RDMA capabilities in the HELLO message can send up to 256 KiB into a 1-byte stack variable in rpcserveclient(), crashing the server or potentially executing code.