EEF-CVE-2026-55737 Heap pointer corruption via signed/unsigned mismatch in LARGE_TUPLE_EXT decoding in erts external term format decoder

Summary Signed to Unsigned Conversion Error and Out-of-bounds Write vulnerability in Erlang OTP erts allows an attacker who can supply a crafted Erlang external term format ETF binary to binary\to\term/1 to corrupt the BEAM heap pointer and crash the virtual machine. When decoding a LARGE\TUPLE\E...