commit f68402565ab0d52e556c0bbfa89feec292133cb9
author Dave Rodgman <dave.rodgman@arm.com> Fri Feb 24 15:41:34 2023 +0000
committer Dave Rodgman <dave.rodgman@arm.com> Fri Feb 24 15:57:30 2023 +0000
tree 3383f570a9e384f5f1f81673cd25d4382883803f
parent 88240e769f974f506f4f5f78fa6acd66d7ae4447

Add corresponding fix for mbedtls_ssl_write

Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>

library/ssl_msg.c

diff --git a/library/ssl_msg.c b/library/ssl_msg.c
index 5deaeda..4ed67b7 100644
--- a/library/ssl_msg.c
+++ b/library/ssl_msg.c
@@ -5672,7 +5672,9 @@
          */
         ssl->out_msglen  = len;
         ssl->out_msgtype = MBEDTLS_SSL_MSG_APPLICATION_DATA;
-        memcpy(ssl->out_msg, buf, len);
+        if (len > 0) {
+            memcpy(ssl->out_msg, buf, len);
+        }
 
         if ((ret = mbedtls_ssl_write_record(ssl, SSL_FORCE_FLUSH)) != 0) {
             MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_write_record", ret);