null-pointer-dereferencing

OthersCVE-2019-13288 > XPDF Infinite recursion & Null pointer dereference

CVE-2019-13288 breaks Xpdf’s invariant that the “object stream” referenced by a compressed object must be an uncompressed stream, because the fetch path doesn’t enforce that rule and a crafted xref can make the supposed object stream itself compressed, causing unbounded recursive fetching and a crash.