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PdfReadError: Could not find xref table at specified location #1089

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MartinThoma opened this issue Jul 10, 2022 · 2 comments
Closed

PdfReadError: Could not find xref table at specified location #1089

MartinThoma opened this issue Jul 10, 2022 · 2 comments
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Has MCVE A minimal, complete and verifiable example helps a lot to debug / understand feature requests is-robustness-issue From a users perspective, this is about robustness PdfReader The PdfReader component is affected

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@MartinThoma
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I wanted to get metadata from a PDF. The PDF opens fine in Chrome.

Environment

Which environment were you using when you encountered the problem?

$ python -m platform
Linux-5.4.0-121-generic-x86_64-with-glibc2.31

$ python -c "import PyPDF2;print(PyPDF2.__version__)"
2.4.2

Code + PDF

The PDF: pdf/6f6d505d151b9769900a8bd315db6e67.pdf

>>> from PyPDF2 import PdfReader
>>> reader = PdfReader('pdf/6f6d505d151b9769900a8bd315db6e67.pdf')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/moose/Github/py-pdf/PyPDF2/PyPDF2/_reader.py", line 267, in __init__
    self.read(stream)
  File "/home/moose/Github/py-pdf/PyPDF2/PyPDF2/_reader.py", line 1305, in read
    raise PdfReadError("Could not find xref table at specified location")
PyPDF2.errors.PdfReadError: Could not find xref table at specified location
@MartinThoma MartinThoma added PdfReader The PdfReader component is affected is-robustness-issue From a users perspective, this is about robustness Has MCVE A minimal, complete and verifiable example helps a lot to debug / understand feature requests labels Jul 10, 2022
@MartinThoma
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Maybe #493 helps?

pubpub-zz added a commit to pubpub-zz/pypdf that referenced this issue Jul 19, 2022
@pubpub-zz
ROB : cope with invalid parent xref (py-pdf#1089)
4daade6 
rebuild the xref if the parent chained xref is invalid
@pubpub-zz
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the problem is that the /Prev in the 1st chained Trailer is pointing to an invalid position. In such case the xref shall be completely rebuild parsing the whole file
proposed fixed in #1133

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Has MCVE A minimal, complete and verifiable example helps a lot to debug / understand feature requests is-robustness-issue From a users perspective, this is about robustness PdfReader The PdfReader component is affected
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