1 files changed, 7 insertions, 0 deletions

diff --git a/lib/libgssapi/gss_get_mic.c b/lib/libgssapi/gss_get_mic.c
index a3495ecfe794..dff3b545f78f 100644
--- a/lib/libgssapi/gss_get_mic.c
+++ b/lib/libgssapi/gss_get_mic.c
@@ -30,6 +30,7 @@
 
 #include "mech_switch.h"
 #include "context.h"
+#include "utils.h"
 
 OM_uint32
 gss_get_mic(OM_uint32 *minor_status,
@@ -41,6 +42,12 @@ gss_get_mic(OM_uint32 *minor_status,
 	struct _gss_context *ctx = (struct _gss_context *) context_handle;
 	struct _gss_mech_switch *m = ctx->gc_mech;
 
+	_gss_buffer_zero(message_token);
+	if (ctx == NULL) {
+		*minor_status = 0;
+		return (GSS_S_NO_CONTEXT);
+	}
+
 	return (m->gm_get_mic(minor_status, ctx->gc_ctx, qop_req,
 		    message_buffer, message_token));
 }