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https://issues.apache.org/jira/browse/PDFBOX-4778?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17037848#comment-17037848
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ASF subversion and git services commented on PDFBOX-4778:
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Commit 1874079 from [email protected] in branch 'pdfbox/branches/2.0'
[ https://svn.apache.org/r1874079 ]
PDFBOX-4778: check the result of a matrix multiplication for illegal values
> Avoid illegal matrix values
> ---------------------------
>
> Key: PDFBOX-4778
> URL: https://issues.apache.org/jira/browse/PDFBOX-4778
> Project: PDFBox
> Issue Type: Bug
> Components: Parsing
> Affects Versions: 2.0.18, 3.0.0 PDFBox
> Reporter: Andreas Lehmkühler
> Assignee: Andreas Lehmkühler
> Priority: Major
> Fix For: 3.0.0 PDFBox, 2.0.20
>
> Attachments: hang-090214-015108-51.pdf
>
>
> [~tallison] found a bunch of problematic [pdfs|
> https://bugs.ghostscript.com/show_bug.cgi?id=695040] and one of them runs
> very slow/forever.
> The attached pdf has a broken content stream so that a lot of matrix
> operations are skipped due to missing values which lead to illegal values
> when multiplying matrices. Some of the calculated test positions are broken
> and in the end text extraction with sorting is very slow or runs infinite.
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