Merge pull request #76 from namse/patch-1

Prevent using crypto for SharedArrayBuffer
bjorn3 · Jun 1, 2024 · 377fbeb · 377fbeb
2 parents 7d86a13 + ee400dd
commit 377fbeb
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/src/wasi.ts b/src/wasi.ts
@@ -829,7 +829,10 @@ export default class WASI {
           self.inst.exports.memory.buffer,
         ).subarray(buf, buf + buf_len);
 
-        if ("crypto" in globalThis) {
+        if (
+          "crypto" in globalThis &&
+          !(self.inst.exports.memory.buffer instanceof SharedArrayBuffer)
+        ) {
           for (let i = 0; i < buf_len; i += 65536) {
             crypto.getRandomValues(buffer8.subarray(i, i + 65536));
           }