gh-151022: Tighten linetable parsing bounds

Author: goutamadwant

Modules/_remote_debugging/code_objects.c

@@ -7,8 +7,7 @@
 
 #include "_remote_debugging.h"
 
-#define MAX_LINETABLE_SIZE (1024 * 1024)
-#define MAX_LINETABLE_ENTRIES 65536
+#define MAX_LINETABLE_SIZE (64 * 1024)
 
 /* ============================================================================
  * TLBC CACHING FUNCTIONS (Py_GIL_DISABLED only)
@@ -189,10 +188,7 @@ parse_linetable(const uintptr_t addrq, const char* linetable, Py_ssize_t linetab
     int computed_line = firstlineno;  // Running accumulator, separate from output
     int val;  // Temporary for varint results
     uint8_t byte;  // Temporary for byte reads
-    size_t entry_count = 0;
-
-    while (ptr < end && *ptr != '\0' && entry_count < MAX_LINETABLE_ENTRIES) {
-        entry_count++;
+    while (ptr < end && *ptr != '\0') {
         uint8_t first_byte = *(ptr++);
         uint8_t code = (first_byte >> 3) & 15;
         size_t length = (first_byte & 7) + 1;