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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-11-12 18:39:08 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-12-10 16:09:14 +0100 |
| commit | 090ac5799751c6f52358da4e5201a3845760db93 (patch) | |
| tree | 767af6d4cfccf368758e35f073c9338f5c5fed48 | |
| parent | 8bcb5fbab5e30c3001c27a8309c94eb1f66b969f (diff) | |
| download | ffmpeg-090ac5799751c6f52358da4e5201a3845760db93.tar.gz | |
avcodec/wmaprodec: Check if the channel sum of all internal contexts match the external
Fixes: NULL pointer dereference
Fixes: 18689/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_XMA1_fuzzer-5715114640015360
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/wmaprodec.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavcodec/wmaprodec.c b/libavcodec/wmaprodec.c index 87e2ead693..6a22e2f552 100644 --- a/libavcodec/wmaprodec.c +++ b/libavcodec/wmaprodec.c @@ -1930,6 +1930,8 @@ static av_cold int xma_decode_init(AVCodecContext *avctx) s->start_channel[i] = start_channels; start_channels += s->xma[i].nb_channels; } + if (start_channels != avctx->channels) + return AVERROR_INVALIDDATA; return ret; } |