diff --git a/libavformat/aiffdec.c b/libavformat/aiffdec.c
index 413ae54748..82cfa22881 100644
--- a/libavformat/aiffdec.c
+++ b/libavformat/aiffdec.c
@@ -119,6 +119,8 @@ static int get_aiff_header(AVFormatContext *s, int size,
     else
         sample_rate = (val + (1ULL<<(-exp-1))) >> -exp;
     par->sample_rate = sample_rate;
+    if (size < 18)
+        return AVERROR_INVALIDDATA;
     size -= 18;
 
     /* get codec id for AIFF-C */