[Poppler-bugs] [Bug 24721] New: Potential negative page index

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=24721

           Summary: Potential negative page index
           Product: poppler
           Version: unspecified
          Platform: Other
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: general
        AssignedTo: poppler-bugs at lists.freedesktop.org
        ReportedBy: igorenbein at finjan.com


Hello,

Im using version 0.12.0. At poppler/PageLabelInfo.cc PageLabelInfo constructor
we have:

         interval->length = next->base - interval->base;  (line 206)

         and

         interval->length = numPages - interval->base; (line 206)

The result of those operations could potentially cause interval->length to be
negative. Following this, value to which index parameter points at 
GBool PageLabelInfo::labelToIndex(GooString *label, int *index) function 
could be negative. The could affect the rendering flow as it is used in 
glib/poppler-document.cc.

Regards,
Ilya Gorenbein


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