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| author | Paul B Mahol <onemda@gmail.com> | 2012-10-15 15:48:13 +0000 |
|---|---|---|
| committer | Paul B Mahol <onemda@gmail.com> | 2012-10-15 15:48:13 +0000 |
| commit | 295218f531528d18f0f21937d3ddf28318898a7c (patch) | |
| tree | 1248c420604796792281397f8aba6439de683361 /libavformat/idcin.c | |
| parent | 3f8148911c6e6e1f2a042bd4ca3ad8516a92130c (diff) | |
| download | ffmpeg-295218f531528d18f0f21937d3ddf28318898a7c.tar.gz | |
idcin: check chunk_size value before using it
Fixes integer overflow. Fixes CID732223.
Signed-off-by: Paul B Mahol <onemda@gmail.com>
Diffstat (limited to 'libavformat/idcin.c')
| -rw-r--r-- | libavformat/idcin.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavformat/idcin.c b/libavformat/idcin.c index f1df00244f..bede04075e 100644 --- a/libavformat/idcin.c +++ b/libavformat/idcin.c @@ -256,6 +256,8 @@ static int idcin_read_packet(AVFormatContext *s, chunk_size = avio_rl32(pb); /* skip the number of decoded bytes (always equal to width * height) */ avio_skip(pb, 4); + if (chunk_size < 4) + return AVERROR_INVALIDDATA; chunk_size -= 4; ret= av_get_packet(pb, pkt, chunk_size); if (ret < 0) |