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-rw-r--r--libavformat/ffmdec.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/libavformat/ffmdec.c b/libavformat/ffmdec.c
index 9ad771ea38..afba9050cb 100644
--- a/libavformat/ffmdec.c
+++ b/libavformat/ffmdec.c
@@ -423,7 +423,7 @@ static int ffm2_read_header(AVFormatContext *s)
}
break;
case MKBETAG('S', '2', 'V', 'I'):
- if (f_stvi++) {
+ if (f_stvi++ || !size) {
ret = AVERROR(EINVAL);
goto fail;
}
@@ -438,7 +438,7 @@ static int ffm2_read_header(AVFormatContext *s)
goto fail;
break;
case MKBETAG('S', '2', 'A', 'U'):
- if (f_stau++) {
+ if (f_stau++ || !size) {
ret = AVERROR(EINVAL);
goto fail;
}