[Webkit-unassigned] [Bug 198101] New: [JSC] ArrayBufferContents::tryAllocate signs the pointer with allocation size and authenticates it with sizeInBytes

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=198101

            Bug ID: 198101
           Summary: [JSC] ArrayBufferContents::tryAllocate signs the
                    pointer with allocation size and authenticates it with
                    sizeInBytes
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ysuzuki at apple.com

But we have some special path for 0 bytes. In this case, allocation size and sizeInBytes become different => authentication failure.

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