[Webkit-unassigned] [Bug 64076] New: webkitAudioContext does not do proper sanity checking on its arguments.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=64076

           Summary: webkitAudioContext does not do proper sanity checking
                    on its arguments.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Windows Vista
            Status: NEW
          Severity: Normal
          Priority: P1
         Component: HTML DOM
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: skylined at chromium.org
                CC: eric at webkit.org, crogers at google.com


Chromium https://code.google.com/p/chromium/issues/detail?id=88638
Split off from bug 63997.

webkitAudioContext takes three arguments, which should be non-zero positive values that are limited by the amount of available memory. The code is currently not doing proper checks, which causes crashes when you supply invalid arguments:

Repro:
<script>
  // This should not crash but simply output "PASS".
  var aiArgs = [
      [-1,1,1], [0,1,1],
      [1,-1,1], [1,0,1],
      [1,1,-1], [1,1,0],
      [0x7FFFFFFF, 0x7FFFFFFF, 0x7FFFFFFF]],
      bFail = false;
  if (!window.webkitAudioContext) {
    document.write('DISABLED');
  } else {
    for (var i = 0; i < aiArgs.length; i++) {
      var code = 'new webkitAudioContext(' + aiArgs[i].join(',') + ')';
      try { eval(code); }
      catch (e) { continue; }
      document.write('FAIL: ' + code);
      bFail = true;
    }
    if (!bFail) document.write('PASS');
  }
</script>

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