In MuPDF 1.12.0 and earlier, multiple use of uninitialized value bugs in the PDF parser could allow an attacker to cause a denial of service (crash) or influence program flow via a crafted file.
git.ghostscript.com/?p=mupdf.git%3Ba=commitdiff%3Bh=83d4dae44c71816c084a635550acc1a51529b881%3Bhp=f597300439e62f5e921f0d7b1e880b5c1a1f1607
bugs.chromium.org/p/oss-fuzz/issues/detail?id=5596
bugs.chromium.org/p/oss-fuzz/issues/detail?id=5600
bugs.chromium.org/p/oss-fuzz/issues/detail?id=5603
bugs.chromium.org/p/oss-fuzz/issues/detail?id=5609
bugs.chromium.org/p/oss-fuzz/issues/detail?id=5610
security.gentoo.org/glsa/201811-15
www.debian.org/security/2018/dsa-4334