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-rw-r--r--ssl/ssl_lib.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/ssl/ssl_lib.c b/ssl/ssl_lib.c
index b75c260725..0b5f234e5c 100644
--- a/ssl/ssl_lib.c
+++ b/ssl/ssl_lib.c
@@ -1075,6 +1075,9 @@ long SSL_ctrl(SSL *s,int cmd,long larg,void *parg)
s->max_cert_list=larg;
return(l);
case SSL_CTRL_SET_MTU:
+ if (larg < dtls1_min_mtu())
+ return 0;
+
if (SSL_version(s) == DTLS1_VERSION ||
SSL_version(s) == DTLS1_BAD_VER)
{