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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-05-04 00:04:49 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-02 19:55:09 +0200 |
| commit | e1f9f5168b6d0ac7dfb7890d61298be226e9af85 (patch) | |
| tree | d7de580fe3ef18fff7fdd22cab050a1025581313 | |
| parent | a8b61aaa115128f2c0fcdcd9535b9921dd5ef99b (diff) | |
| download | ffmpeg-e1f9f5168b6d0ac7dfb7890d61298be226e9af85.tar.gz | |
avcodec/dsddec: Check channels
Fixes: division by zero
Fixes: 21677/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DSD_MSBF_fuzzer-5712547983654912
Fixes: 21751/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DSD_LSBF_fuzzer-5197097180856320
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 2570a8777e7095358b10f679d35641e114a2ab33)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/dsddec.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/dsddec.c b/libavcodec/dsddec.c index 2c5c357acc..a2e038419f 100644 --- a/libavcodec/dsddec.c +++ b/libavcodec/dsddec.c @@ -44,6 +44,9 @@ static av_cold int decode_init(AVCodecContext *avctx) int i; uint8_t silence; + if (!avctx->channels) + return AVERROR_INVALIDDATA; + ff_init_dsd_data(); s = av_malloc_array(sizeof(DSDContext), avctx->channels); |