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| author | Michael Niedermayer <michaelni@gmx.at> | 2012-12-12 14:09:19 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2012-12-12 14:12:47 +0100 |
| commit | 5a4eb6aa275e4c1b80e1e125a7901903e35219f2 (patch) | |
| tree | 146d5e4ec25917dfb90c6cbddd2674d5a687c0c3 | |
| parent | 0ceca269b66ec12a23bf0907bd2c220513cdbf16 (diff) | |
| download | ffmpeg-5a4eb6aa275e4c1b80e1e125a7901903e35219f2.tar.gz | |
avfilter_get_video_buffer_ref_from_frame: check channel count
more than 8 channels is not supported and crashes with null pointer dereference
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavfilter/avcodec.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/libavfilter/avcodec.c b/libavfilter/avcodec.c index 688f1b397a..705cf80ca5 100644 --- a/libavfilter/avcodec.c +++ b/libavfilter/avcodec.c @@ -92,8 +92,12 @@ AVFilterBufferRef *avfilter_get_video_buffer_ref_from_frame(const AVFrame *frame AVFilterBufferRef *avfilter_get_audio_buffer_ref_from_frame(const AVFrame *frame, int perms) { - AVFilterBufferRef *samplesref = - avfilter_get_audio_buffer_ref_from_arrays((uint8_t **)frame->data, frame->linesize[0], perms, + AVFilterBufferRef *samplesref; + + if(av_frame_get_channels(frame) > 8) // libavfilter does not suport more than 8 channels FIXME, remove once libavfilter is fixed + return NULL; + + samplesref = avfilter_get_audio_buffer_ref_from_arrays((uint8_t **)frame->data, frame->linesize[0], perms, frame->nb_samples, frame->format, av_frame_get_channel_layout(frame)); if (!samplesref) |