• Create ticket/issue

Follow the guide to enable codebase context checks.

Objective: To create a detailed and reliable record of critical system actions for security analysis
and compliance.

Status: Passed

Learn more about managing compliance generic rules or creating your own custom rules

Objective: Ensure all identifiers clearly express their purpose and intent, making code
self-documenting

Status: Passed

Learn more about managing compliance generic rules or creating your own custom rules

Objective: To prevent the leakage of sensitive system information through error messages while
providing sufficient detail for internal debugging.

Status: Passed

Learn more about managing compliance generic rules or creating your own custom rules

Objective: To ensure logs are useful for debugging and auditing without exposing sensitive
information like PII, PHI, or cardholder data.

Status: Passed

Learn more about managing compliance generic rules or creating your own custom rules

Objective: Ensure all data inputs are validated, sanitized, and handled securely to prevent
vulnerabilities

Status: Passed

Learn more about managing compliance generic rules or creating your own custom rules

Objective: Ensure comprehensive error handling that provides meaningful context and graceful
degradation

Status:
Dispose race condition: The new Dispose(bool disposing) uses a non-atomic _disposed check and a non-atomic
_receiveBuffer nullification, which can still allow concurrent Dispose() calls to
double-return the shared buffer to the pool.

private void Dispose(bool disposing)
{
    if (_disposed)
    {
        return;
    }

    if (disposing)
    {
        _webSocket.Dispose();
        _sharedMemoryStream.Dispose();
        _socketSendSemaphoreSlim.Dispose();
    }

    if (_receiveBuffer is not null)
    {
        ArrayPool<byte>.Shared.Return(_receiveBuffer);

        _receiveBuffer = null!;
    }



 ... (clipped 2 lines)

Learn more about managing compliance generic rules or creating your own custom rules

Fix a race condition in the Dispose method by using Interlocked.CompareExchange
to ensure the disposal logic runs only once, preventing potential memory
corruption.

dotnet/src/webdriver/BiDi/WebSocketTransport.cs [91-126]

-private bool _disposed;
+private int _disposed;
 
 public void Dispose()
 {
     Dispose(true);
     GC.SuppressFinalize(this);
 }
 
 ~WebSocketTransport()
 {
     Dispose(false);
 }
 
 private void Dispose(bool disposing)
 {
-    if (_disposed)
+    if (Interlocked.CompareExchange(ref _disposed, 1, 0) != 0)
     {
         return;
     }
 
     if (disposing)
     {
         _webSocket.Dispose();
         _sharedMemoryStream.Dispose();
         _socketSendSemaphoreSlim.Dispose();
     }
 
     if (_receiveBuffer is not null)
     {
         ArrayPool<byte>.Shared.Return(_receiveBuffer);
 
         _receiveBuffer = null!;
     }
-
-    _disposed = true;
 }

[To ensure code accuracy, apply this suggestion manually]

Improve exception safety in the Dispose method by using a try/finally block to
guarantee the rented buffer is always returned to the pool, even if an error
occurs.

dotnet/src/webdriver/BiDi/WebSocketTransport.cs [104-126]

 private void Dispose(bool disposing)
 {
     if (_disposed)
     {
         return;
     }
 
-    if (disposing)
+    try
     {
-        _webSocket.Dispose();
-        _sharedMemoryStream.Dispose();
-        _socketSendSemaphoreSlim.Dispose();
+        if (disposing)
+        {
+            _webSocket.Dispose();
+            _sharedMemoryStream.Dispose();
+            _socketSendSemaphoreSlim.Dispose();
+        }
     }
-
-    if (_receiveBuffer is not null)
+    finally
     {
-        ArrayPool<byte>.Shared.Return(_receiveBuffer);
-
-        _receiveBuffer = null!;
+        if (_receiveBuffer is not null)
+        {
+            ArrayPool<byte>.Shared.Return(_receiveBuffer);
+            _receiveBuffer = null!;
+        }
+        _disposed = true;
     }
-
-    _disposed = true;
 }

• Apply / Chat

Add a check at the beginning of public methods to throw an
ObjectDisposedException if the object has already been disposed.

dotnet/src/webdriver/BiDi/WebSocketTransport.cs [41-44]

 public async Task ConnectAsync(CancellationToken cancellationToken)
 {
+    if (_disposed)
+    {
+        throw new ObjectDisposedException(nameof(WebSocketTransport));
+    }
     await _webSocket.ConnectAsync(_uri, cancellationToken).ConfigureAwait(false);
 }

[To ensure code accuracy, apply this suggestion manually]