[FFmpeg-cvslog] avformat/idroqdec: Check chunk_size for being too large

[Michael Niedermayer]

ffmpeg | branch: release/3.0 | Michael Niedermayer <michael at niedermayer.cc> | Tue Nov 29 02:58:34 2016 +0100| [ff01dbb6ec88285d11fb87be109007f398cb0e56] | committer: Michael Niedermayer

avformat/idroqdec: Check chunk_size for being too large

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit 744a0b5206634e5de04d5c31f08cc3640faf800d)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ff01dbb6ec88285d11fb87be109007f398cb0e56
---

 libavformat/idroqdec.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavformat/idroqdec.c b/libavformat/idroqdec.c
index 76bb392..d733953 100644
--- a/libavformat/idroqdec.c
+++ b/libavformat/idroqdec.c
@@ -157,6 +157,9 @@ static int roq_read_packet(AVFormatContext *s,
             chunk_size = AV_RL32(&preamble[2]) + RoQ_CHUNK_PREAMBLE_SIZE * 2 +
                 codebook_size;
 
+            if (chunk_size > INT_MAX)
+                return AVERROR_INVALIDDATA;
+
             /* rewind */
             avio_seek(pb, codebook_offset, SEEK_SET);