[FFmpeg-cvslog] vorbisdec: Check bark_map_size.
Michael Niedermayer
git at videolan.org
Sun Jul 20 19:17:02 CEST 2014
ffmpeg | branch: release/1.0 | Michael Niedermayer <michaelni at gmx.at> | Fri Jan 11 00:54:12 2013 +0100| [0916d0f9d1b94b4bb88382edae45b9276746574d] | committer: Michael Niedermayer
vorbisdec: Check bark_map_size.
This fixes potential divisions by zero and out of array accesses.
Reported-by: Dale Curtis <dalecurtis at chromium.org>
Found-by: inferno at chromium.org
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
(cherry picked from commit 2c16bf2de07c68513072bf3cc96401d2c6291a3e)
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=0916d0f9d1b94b4bb88382edae45b9276746574d
---
libavcodec/vorbisdec.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/libavcodec/vorbisdec.c b/libavcodec/vorbisdec.c
index 8ce0fc7..0ea73d5 100644
--- a/libavcodec/vorbisdec.c
+++ b/libavcodec/vorbisdec.c
@@ -599,6 +599,10 @@ static int vorbis_parse_setup_hdr_floors(vorbis_context *vc)
"Floor 0 amplitude bits is 0.\n");
return AVERROR_INVALIDDATA;
}
+ if (floor_setup->data.t0.bark_map_size == 0) {
+ av_log(vc->avccontext, AV_LOG_ERROR, "Floor 0 bark map size is 0.\n");
+ return AVERROR_INVALIDDATA;
+ }
floor_setup->data.t0.amplitude_offset = get_bits(gb, 8);
floor_setup->data.t0.num_books = get_bits(gb, 4) + 1;
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