[Webkit-unassigned] [Bug 53870] New: Fix potential buffer overrun in SVGTextRunWalker::walk()

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=53870

           Summary: Fix potential buffer overrun in
                    SVGTextRunWalker::walk()
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: SVG
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: kling at webkit.org
                CC: zimmermann at kde.org


SVGFont.cpp:247 has this code:
const String text = Font::normalizeSpaces(String(run.data(from), run.length()));

If from > 0, the String constructor will access data after the UChar* buffer.

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