_gnutls_version_max: return NULL if priorities are not populated

Signed-off-by: Daiki Ueno <ueno@gnu.org>

diff --git a/lib/algorithms/protocols.c b/lib/algorithms/protocols.c
index 64c86eba3c0b86dac7cf202358baf9d1cdcbbb7a..3006e8242d8431335e36625c77cc6e1de2737112 100644 (file)
--- a/lib/algorithms/protocols.c
+++ b/lib/algorithms/protocols.c
@@ -320,6 +320,11 @@ const version_entry_st *_gnutls_version_max(gnutls_session_t session)
        gnutls_protocol_t cur_prot;
        const version_entry_st *p, *max = NULL;
 
+       if (!session->internals.priorities) {
+               gnutls_assert();
+               return NULL;
+       }
+
        for (i = 0; i < session->internals.priorities->protocol.num_priorities;
             i++) {
                cur_prot =