Updated qpdf packages fix security vulnerabilities:
- Stack overflow due to endless recursion in QPDFTokenizer::resolveLiteral()
- Another stack overflow / endless recursion in QPDFWriter::enqueueObject()
- Stack out of bounds read in iterate_rc4()
- heap out of bounds read (large) in Pl_Buffer::write
- Hang due to a pdf xref loop:
Also, the libjpeg package has been patched to provide pkgconfig files, so that
cups-filters could be rebuilt against this qpdf update.