
kdf_pbkdf1_do_derive stores key derivation information in a stack variable, which is left uncleansed prior to returning. Ensure that the stack information is zeroed prior to return to avoid potential leaks of key information Reviewed-by: Tomas Mraz <tomas@openssl.org> Reviewed-by: Matt Caswell <matt@openssl.org> (Merged from https://github.com/openssl/openssl/pull/23194)