avsdemux: check for corrupted data

Signed-off-by: Janne Grunau <janne-libav@jannau.net>

avsdemux: check for corrupted data
Signed-off-by: Janne Grunau <janne-libav@jannau.net>
76c6971a · Laurent Aimar · Janne Grunau · 7bb1807c · 76c6971a
Commit 76c6971a authored Sep 30, 2011 by Laurent Aimar Committed by Janne Grunau Oct 10, 2011
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avs.c libavformat/avs.c +2 -0

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--- a/libavformat/avs.c
+++ b/libavformat/avs.c
@@ -163,6 +163,8 @@ static int avs_read_packet(AVFormatContext * s, AVPacket * pkt)
            sub_type = avio_r8(s->pb);
            type = avio_r8(s->pb);
            size = avio_rl16(s->pb);
+            if (size < 4)
+                return AVERROR_INVALIDDATA;
            avs->remaining_frame_size -= size;

            switch (type) {