[PATCH 0/1] MR8180: crypt32: Fix use-after-free in CRYPT_ImportSystemRootCertsToReg.

[Yuxuan Shui (＠yshui)]

CRYPT_ImportSystemRootCertsToReg calls sync_trusted_roots_from_known_locations which calls
check_and_store_certs. check_and_store_certs creates a chain engine with `cached`. Here the problem
is that the chain engine actually owns the store used to create it. And when later the chain engine
is freed, the store is closed too.

This means on the success path `cached` is already closed when
sync_trusted_roots_from_known_locations returns to CRYPT_ImportSystemRootCertsToReg, but
CRYPT_ImportSystemRootCertsToReg tries to close `cached` again.