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wavpack: check packet size early

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
(cherry picked from commit fd06291239c1bb616bf303b5696cc432710b2530)

Signed-off-by: Reinhard Tartler <siretart@tauware.de>

Luca Barbato authored on 2013/05/22 19:51:42
Showing 1 changed files

libavcodec/wavpack.c index 7ceb947..59d735f 100644

libavcodec/wavpack.c

History View file @ 42fed7f

@@ -1171,6 +1171,9 @@ static int wavpack_decode_frame(AVCodecContext *avctx, void *data,
                          int frame_size, ret, frame_flags;
                          int samplecount = 0;
                     +    if (avpkt->size < 12 + s->multichannel * 4)
                     +        return AVERROR_INVALIDDATA;
+                    +
                          s->block     = 0;
                          s->ch_offset = 0;