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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-05-04 01:04:49 +0300 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-01 14:33:45 +0300 |
| commit | a24bbffebe8570d056f2b287fa8fc992820248e1 (patch) | |
| tree | 6cae7b39da208a2a19c68bf88355b1eedeb4a54e /libavcodec | |
| parent | 0fdaecd8f0ae6bc5e710e69caa129157e3744a65 (diff) | |
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>
Diffstat (limited to 'libavcodec')
| -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); |