MAX_REMOTE_READ

Author: maurycy

Modules/_remote_debugging/_remote_debugging.h

@@ -144,7 +144,7 @@ typedef enum _WIN32_THREADSTATE {
 #define SIZEOF_INTERPRETER_STATE sizeof(PyInterpreterState)
 
 /* Maximum sizes for validation to prevent buffer overflows from corrupted data */
-#define REMOTE_READ_SANITY_LIMIT ((Py_ssize_t)(256 * 1024))  /* 256 KB max for variable-length object reads */
+#define MAX_REMOTE_READ ((Py_ssize_t)(256 * 1024))  /* 256 KB max for variable-length object reads */
 #define MAX_STACK_CHUNK_SIZE (16 * 1024 * 1024)  /* 16 MB max for stack chunks */
 #define MAX_LONG_DIGITS 64  /* Allows values up to ~2^1920 */
 #define MAX_SET_TABLE_SIZE (1 << 20)  /* 1 million entries max for set iteration */

Modules/_remote_debugging/code_objects.c

@@ -418,7 +418,7 @@ parse_code_object(RemoteUnwinderObject *unwinder,
 
         linetable = read_py_bytes(unwinder,
             GET_MEMBER(uintptr_t, code_object, unwinder->debug_offsets.code_object.linetable),
-            REMOTE_READ_SANITY_LIMIT);
+            MAX_REMOTE_READ);
         if (!linetable) {
             if (_Py_RemoteDebug_IsFatalReadError()) {
                 set_exception_cause(unwinder, PyExc_RuntimeError, "Failed to read linetable from code object");

Modules/_remote_debugging/object_reading.c

@@ -64,7 +64,7 @@ read_py_str(
     }
 
     Py_ssize_t len = GET_MEMBER(Py_ssize_t, unicode_obj, unwinder->debug_offsets.unicode_object.length);
-    if (len < 0 || len > REMOTE_READ_SANITY_LIMIT) {
+    if (len < 0 || len > MAX_REMOTE_READ) {
         PyErr_Format(PyExc_RuntimeError,
                      "Invalid string length (%zd) at 0x%lx", len, address);
         set_exception_cause(unwinder, PyExc_RuntimeError, "Invalid string length in remote Unicode object");