OSV-2022-302 Heap-use-after-free in read_markers

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=46334 Crash type: Heap-use-after-free READ 4 Crash state: readmarkers consumemarkers jpegconsumeinput...

OSV-2020-804 Use-of-uninitialized-value in read_markers

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=23581 Crash type: Use-of-uninitialized-value Crash state: readmarkers consumemarkers jpegconsumeinput...