tls1_heartbeat: check for NULL after allocating buf

Signed-off-by: Kurt Roeckx <kurt@roeckx.be>
Reviewed-by: Matt Caswell <matt@openssl.org>

diff --git a/ssl/t1_lib.c b/ssl/t1_lib.c
index 4133c43ff2b5ec59a1a56687527fe110e6cefa34..8d5fd12903c2b83c151c88f2ad88e105742bcf41 100644 (file)
--- a/ssl/t1_lib.c
+++ b/ssl/t1_lib.c
@@ -4094,6 +4094,11 @@ tls1_heartbeat(SSL *s)
         *  - Padding
         */
        buf = OPENSSL_malloc(1 + 2 + payload + padding);
+       if (buf == NULL)
+               {
+               SSLerr(SSL_F_TLS1_HEARTBEAT,ERR_R_MALLOC_FAILURE);
+               return -1;
+               }
        p = buf;
        /* Message Type */
        *p++ = TLS1_HB_REQUEST;