OSV-2021-729 Global-buffer-overflow in libfsext_inode_read_data

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33940 Crash type: Global-buffer-overflow READ Crash state: libfsextinodereaddata libfsextinodereadelementdata libfdatavectorgetelementvaluebyindex...