Handle a memory allocation failure in ssl3_init_finished_mac()

The ssl3_init_finished_mac() function can fail, in which case we need to
propagate the error up through the stack.

RT#3198

Reviewed-by: Rich Salz <rsalz@openssl.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/ssl/statem/statem_clnt.c b/ssl/statem/statem_clnt.c
index ecbc43b3d0..a97f0cc6bf 100644
--- a/ssl/statem/statem_clnt.c
+++ b/ssl/statem/statem_clnt.c
@@ -391,7 +391,10 @@ WORK_STATE ossl_statem_client_pre_work(SSL *s, WORK_STATE wst)
         s->shutdown = 0;
         if (SSL_IS_DTLS(s)) {
             /* every DTLS ClientHello resets Finished MAC */
-            ssl3_init_finished_mac(s);
+            if (!ssl3_init_finished_mac(s)) {
+                ossl_statem_set_error(s);
+                return WORK_ERROR;
+            }
         }
         break;