SECURITY UPDATE: out-of-bounds read in JBIG2Bitmap::combine()
(JBIG2Stream.cc) via a crafted JBIG2 stream, from a misplaced isOk check
debian/patches/CVE-2025-32365.patch: add the isOk() guard at the top of
JBIG2Bitmap::combine() so every caller is protected against
out-of-bounds reads on a not-OK bitmap (upstream commit 1f151565,
adapted to poppler 0.62 GBool/Guint)
CVE-2025-32365
SECURITY UPDATE: uncontrolled recursion / stack overflow in the XRefStm
chain parser (XRef.cc) via a crafted PDF, causing denial of service
debian/patches/CVE-2020-23804.patch: cap the XRefStm chain at 4096
entries in XRef::readXRefTable() to stop the readXRef/readXRefTable
recursion from exhausting the stack on crafted PDFs (upstream commit
ec8a43c8)