From b4f23a699f08846e51ee0b7603acf961c57b284d Mon Sep 17 00:00:00 2001
From: cl507523 <cl507523@antgroup.com>
Date: Tue, 14 Apr 2026 11:47:32 +0000
Subject: [PATCH] fix(runtime): restore readable linear memory permissions

Ensure mmap-backed wasm linear memory is reprotected with read+write access, avoiding write-only mappings that can break post-grow reads on stricter platforms.

Made-with: Cursor
---
 src/runtime/memory.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/runtime/memory.cpp b/src/runtime/memory.cpp
index e80718a42..0fc26619b 100644
--- a/src/runtime/memory.cpp
+++ b/src/runtime/memory.cpp
@@ -330,7 +330,7 @@ void WasmMemoryAllocator::mprotectReadWriteWasmMemoryData(
     }
   }
   if (0 !=
-      ::mprotect(Data.MemoryData, Data.MemorySize, PROT_WRITE | PROT_WRITE)) {
+      ::mprotect(Data.MemoryData, Data.MemorySize, PROT_READ | PROT_WRITE)) {
     ZEN_ABORT();
   }
 }