diff --git a/libavcodec/aacdec.c b/libavcodec/aacdec.c
index 3d398a4360..2132420cc1 100644
--- a/libavcodec/aacdec.c
+++ b/libavcodec/aacdec.c
@@ -404,6 +404,8 @@ static int read_stream_mux_config(struct LATMContext *latmctx,
             } else {
                 int esc;
                 do {
+                    if (get_bits_left(gb) < 9)
+                        return AVERROR_INVALIDDATA;
                     esc = get_bits(gb, 1);
                     skip_bits(gb, 8);
                 } while (esc);