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<base href="https://bugs.freedesktop.org/" />
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<th>Priority</th>
<td>medium
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<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - pdfinfo hangs when a corrupt file is piped in via stdin"
href="https://bugs.freedesktop.org/show_bug.cgi?id=64967">64967</a>
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<th>Assignee</th>
<td>poppler-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Summary</th>
<td>pdfinfo hangs when a corrupt file is piped in via stdin
</td>
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<th>Severity</th>
<td>major
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>Mac OS X (All)
</td>
</tr>
<tr>
<th>Reporter</th>
<td>nathan@storydesk.com
</td>
</tr>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Component</th>
<td>utils
</td>
</tr>
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<th>Product</th>
<td>poppler
</td>
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=79774" name="attach_79774" title="A bad PDF file">attachment 79774</a> <a href="attachment.cgi?id=79774&action=edit" title="A bad PDF file">[details]</a></span>
A bad PDF file
When pdfinfo receives a corrupt file that is piped in via stdin it hangs with
100% CPU usage.
Example Usage:
cat damaged.pdf | pdfinfo -
Output:
Syntax Warning: May not be a PDF file (continuing anyway)
Expected outcome:
The program should terminate after determining that the file is corrupt
Actual outcome:
After outputting the one error message it never terminates and sits there using
100% of the CPU.
It is worth noting that when pdfinfo is invoked with the exact same file via:
pdfinfo damaged.pdf
instead of piping the corrupt PDF in via stdin then this problem does not
happen and the output is:
Syntax Warning: May not be a PDF file (continuing anyway)
Syntax Error: Couldn't find trailer dictionary
Syntax Error: Couldn't read xref table
Then the process terminates as expected.
I have attached the bad file that I am using to test with and recreate this
issue.</pre>
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</p>
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