Recover host enumeration from zero length descriptors

2024-10-18 18:05:58 +02:00
parent 8b1e40c3e2
commit ebcd7067c9
2 changed files with 11 additions and 0 deletions
--- a/src/tusb.c
+++ b/src/tusb.c
@@ -255,6 +255,10 @@ uint16_t tu_desc_get_interface_total_len(tusb_desc_interface_t const* desc_itf,
          ((tusb_desc_interface_t const*) p_desc)->bAlternateSetting == 0) {
        break;
      }
+      if (tu_desc_len(p_desc) == 0) {
+        // Escape infinite loop
+        break;
+      }

      len += tu_desc_len(p_desc);
      p_desc = tu_desc_next(p_desc);