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Description of problem:
One of the reasons why MariaDB and MySQL components fail to build with OpenSSL 3.x is a change in how context of digest functions can be used.
I understand that using those functions is deprecated, but it doesn't mean it should result in segmentation fault.
MySQL uses for example something like this:
static void my_md5_hash(unsigned char *digest, unsigned const char *buf,
int len) {
MD5_CTX ctx;
MD5_Init(&ctx);
MD5_Update(&ctx, buf, len);
MD5_Final(digest, &ctx);
}
It worked with OpenSSL 1.x but not with 3.x.
Version-Release number of selected component (if applicable):
openssl-3.0.0-0.alpha16.1.ssl3.x86_64
Created attachment 1784946[details]
Reproducer extracted from MariaDB 10.5.9
This is another reproducer, this time what MariaDB does, extracted to a standalone file.
Usage:
$ gcc -DHAVE_OPENSSL -lssl -lcrypto md5-reproducer.c && ./a.out
Segmentation fault (core dumped)
It looks like again, char ctx_buf[EVP_MD_CTX_SIZE]; on stack is a problem with new OpenSSL 3.x.
Description of problem: One of the reasons why MariaDB and MySQL components fail to build with OpenSSL 3.x is a change in how context of digest functions can be used. I understand that using those functions is deprecated, but it doesn't mean it should result in segmentation fault. MySQL uses for example something like this: static void my_md5_hash(unsigned char *digest, unsigned const char *buf, int len) { MD5_CTX ctx; MD5_Init(&ctx); MD5_Update(&ctx, buf, len); MD5_Final(digest, &ctx); } It worked with OpenSSL 1.x but not with 3.x. Version-Release number of selected component (if applicable): openssl-3.0.0-0.alpha16.1.ssl3.x86_64