[Poppler-bugs] [Bug 104468] New: "/OCRPageInfo <</L /eng >> BDC" marked content causes abort

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104468

            Bug ID: 104468
           Summary: "/OCRPageInfo <</L /eng >> BDC" marked content causes
                    abort
           Product: poppler
           Version: unspecified
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: general
          Assignee: poppler-bugs at lists.freedesktop.org
          Reporter: jmmorlan at sonic.net

We encountered a PDF file (produced by "Nuance PDF Create") with a content
stream containing marked content that looks like this:

/OCRPageInfo <</L /eng >> BDC
...
 EMC

The file causes poppler to crash with the following messages:

Syntax Error (546164): Unexpected MC Type: 7
Internal Error (0): Call to Object where the object was type 7, not the
expected type 4
Aborted

The problem is in Gfx::opBeginMarkedContent. Any marked content with a tag
starting with "OC" is assumed to be optional content. And if args[1].isName()
is false, it calls args[1].getName() anyway.

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