diff --git a/gst-libs/gst/codecparsers/gsth265parser.c b/gst-libs/gst/codecparsers/gsth265parser.c
index fe775a8..44b7237 100644
--- a/gst-libs/gst/codecparsers/gsth265parser.c
+++ b/gst-libs/gst/codecparsers/gsth265parser.c
@@ -1845,6 +1845,7 @@ gst_h265_parse_vps (GstH265NalUnit * nalu, GstH265VPS * vps)
 
   READ_UINT8 (&nr, vps->max_layers_minus1, 6);
   READ_UINT8 (&nr, vps->max_sub_layers_minus1, 3);
+  CHECK_ALLOWED (vps->max_sub_layers_minus1, 0, 6);
   READ_UINT8 (&nr, vps->temporal_id_nesting_flag, 1);
 
   /* skip reserved_0xffff_16bits */
@@ -2015,6 +2016,7 @@ gst_h265_parse_sps (GstH265Parser * parser, GstH265NalUnit * nalu,
   READ_UINT8 (&nr, sps->vps_id, 4);
 
   READ_UINT8 (&nr, sps->max_sub_layers_minus1, 3);
+  CHECK_ALLOWED (sps->max_sub_layers_minus1, 0, 6);
   READ_UINT8 (&nr, sps->temporal_id_nesting_flag, 1);
 
   if (!gst_h265_parse_profile_tier_level (&sps->profile_tier_level, &nr,