OSV-2021-1724 Segv on unknown address in chunk_obj_alloc

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=42633 Crash type: Segv on unknown address Crash state: chunkobjalloc chunkallocbytes pdfipscriptinterpret...

OSV-2021-1707 Negative-size-param in general_endcidrange_func

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=42479 Crash type: Negative-size-param Crash state: generalendcidrangefunc cmapendcidrangefunc pdfipscriptinterpret...