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Eliminate one potential integer overflow

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There are more to handle, but this resolves an issue already caught by
oss-fuzz.
This commit is contained in:
Jay Berkenbilt 2019-06-15 08:49:18 -04:00
parent d0b26b8337
commit cd830968ef
1 changed files with 1 additions and 1 deletions
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2
libqpdf/QPDF.cc
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@ -812,7 +812,7 @@ QPDF::read_xrefTable(qpdf_offset_t xref_offset)
"xref syntax invalid"); "xref syntax invalid");
} }
this->m->file->seek(this->m->file->getLastOffset() + bytes, SEEK_SET); this->m->file->seek(this->m->file->getLastOffset() + bytes, SEEK_SET);
for (int i = obj; i < obj + num; ++i) for (qpdf_offset_t i = obj; i - num < obj; ++i)
{ {
if (i == 0) if (i == 0)
{ {