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-rw-r--r--libavformat/flacdec.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/libavformat/flacdec.c b/libavformat/flacdec.c
index 3060dc45fd..66baba5922 100644
--- a/libavformat/flacdec.c
+++ b/libavformat/flacdec.c
@@ -65,7 +65,8 @@ static int flac_read_header(AVFormatContext *s)
/* process metadata blocks */
while (!avio_feof(s->pb) && !metadata_last) {
- avio_read(s->pb, header, 4);
+ if (avio_read(s->pb, header, 4) != 4)
+ return AVERROR(AVERROR_INVALIDDATA);
flac_parse_block_header(header, &metadata_last, &metadata_type,
&metadata_size);
switch (metadata_type) {