[Webkit-unassigned] [Bug 268300] New: IPC validation for DocumentEditingContext::Range should not crash on overflow

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=268300

            Bug ID: 268300
           Summary: IPC validation for DocumentEditingContext::Range
                    should not crash on overflow
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit2
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: wenson_hsieh at apple.com
                CC: kkinnunen at apple.com

Checked<uint64_t> { … } handles overflow by crashing, which isn't ideal.

The validator should instead fail decoding gracefully and MESSAGE_CHECK the web process, by recording the uint64_t overflow.

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