From e9fd4ccf0ccccb2db3c416b5f6ae05d1344c838d Mon Sep 17 00:00:00 2001
From: Max Brunsfeld <maxbrunsfeld@gmail.com>
Date: Thu, 25 Apr 2024 13:51:05 -0700
Subject: [PATCH] Guard against serialization buffer overflows from wasm
 languages

---
 lib/src/wasm_store.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/src/wasm_store.c b/lib/src/wasm_store.c
index 34c39e8f..054013b1 100644
--- a/lib/src/wasm_store.c
+++ b/lib/src/wasm_store.c
@@ -1642,6 +1642,10 @@ uint32_t ts_wasm_store_call_scanner_serialize(
   if (self->has_error) return 0;
 
   uint32_t length = args[0].i32;
+  if (length > TREE_SITTER_SERIALIZATION_BUFFER_SIZE) {
+      self->has_error = true;
+      return 0;
+  }
 
   if (length > 0) {
     memcpy(