OSV-2022-949 Heap-use-after-free in s_file_write_flush

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=51745 Crash type: Heap-use-after-free READ 8 Crash state: sfilewriteflush sclose streamfinalize...

OSV-2022-727 Heap-buffer-overflow in s_file_write_flush

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=50370 Crash type: Heap-buffer-overflow READ 8 Crash state: sfilewriteflush sclose streamfinalize...