commit 8a9f88899d7b0df64cd54ca0f7760cbc4d5b491b
author Dave Rodgman <dave.rodgman@arm.com> Thu Aug 11 10:12:34 2022 +0100
committer GitHub <noreply@github.com> Thu Aug 11 10:12:34 2022 +0100
tree 7c9a3eb3ee569b691c26b9f73ed6b0b49a60e4e4
parent 322a7a19e7c338a76984865aab9fa5095da27c0d
parent e9d8dcdbf5629bc9320b85060a470f381620867e

Merge pull request #6186 from leorosen/ssl_tls_null_on_invalid_code

ssl_tls: avoid the appearance of a potential NULL dereferencing

library/ssl_tls.c

diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index dada148..19b8a41 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -7286,7 +7286,7 @@
     const mbedtls_ssl_ciphersuite_t * const ciphersuite_info =
          mbedtls_ssl_ciphersuite_from_id( ciphersuite_id );
 
-    if( ciphersuite_info->mac == MBEDTLS_MD_SHA384 )
+    if( ciphersuite_info != NULL && ciphersuite_info->mac == MBEDTLS_MD_SHA384 )
         return( tls_prf_sha384 );
 #else
     (void) ciphersuite_id;