commit b08e44fda7263c0393507ac0a3ce075db11a79da
author Gilles Peskine <Gilles.Peskine@arm.com> Tue Jan 21 16:56:03 2020 +0100
committer Gilles Peskine <Gilles.Peskine@arm.com> Tue Jan 21 16:56:14 2020 +0100
tree ab31ee67ad851fcc5f0bdcd6f4bd6b2a0cf3b321
parent dbcb44202c9b67184a72afd21c7191c17eee352e

Add missing return code check on call to mbedtls_md()

library/x509write_csr.c

diff --git a/library/x509write_csr.c b/library/x509write_csr.c
index 0c3c396..7c51798 100644
--- a/library/x509write_csr.c
+++ b/library/x509write_csr.c
@@ -214,7 +214,9 @@
         return( MBEDTLS_ERR_X509_FATAL_ERROR );
     }
 #else /* MBEDTLS_USE_PSA_CRYPTO */
-    mbedtls_md( mbedtls_md_info_from_type( ctx->md_alg ), c, len, hash );
+    ret = mbedtls_md( mbedtls_md_info_from_type( ctx->md_alg ), c, len, hash );
+    if( ret != 0 )
+        return( ret );
 #endif
     if( ( ret = mbedtls_pk_sign( ctx->key, ctx->md_alg, hash, 0, sig, &sig_len,
                                  f_rng, p_rng ) ) != 0 )