OSV-2018-426 UNKNOWN READ in jpx_read_image

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=8866 Crash type: UNKNOWN READ Crash state: jpxreadimage fzloadjpx pdfloadjpx...

mupdf/pdf_fuzzer: Heap-buffer-overflow in jpx_read_image

Project: git://git.ghostscript.com/mupdf.git Detailed report: https://oss-fuzz.com/testcase?key=6011746750824448 Project: mupdf Fuzzer: aflmupdfpdffuzzer Fuzz target binary: pdffuzzer Job Type: aflasanmupdf Platform Id: linux Crash Type: Heap-buffer-overflow READ 4 Crash Address: 0x7f0b2eb44174...