OSV-2022-994 Heap-buffer-overflow in onig_node_str_cat

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=51920 Crash type: Heap-buffer-overflow READ 4 Crash state: onignodestrcat parseexp parsebranch...

OSV-2020-53 Index-out-of-bounds in parse_exp

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=22925 Crash type: Index-out-of-bounds Crash state: parseexp parsebranch parsealts...