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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-03-18 00:11:28 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-03-18 12:31:32 +0100 |
| commit | 31916d3d9fc61bab50ccbcc2d58bf7e7efb6c8a0 (patch) | |
| tree | 92ee5e78d31cbaba082a90999613ce1e7f9f9d37 /libavcodec/alsdec.c | |
| parent | b59ea948cdcb8422964595c32076312756550f17 (diff) | |
| download | ffmpeg-31916d3d9fc61bab50ccbcc2d58bf7e7efb6c8a0.tar.gz | |
avcodec/alsdec: Set channels from data after data is set
Fixes: out of array write
Fixes: 45624/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ALS_fuzzer-6473487382872064
Fixes: 45626/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ALS_fuzzer-4874997192065024
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/alsdec.c')
| -rw-r--r-- | libavcodec/alsdec.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libavcodec/alsdec.c b/libavcodec/alsdec.c index 822cf211b0..73af829178 100644 --- a/libavcodec/alsdec.c +++ b/libavcodec/alsdec.c @@ -1986,7 +1986,7 @@ static av_cold int decode_init(AVCodecContext *avctx) unsigned int c; unsigned int channel_size; int num_buffers, ret; - int channels = avctx->ch_layout.nb_channels; + int channels; ALSDecContext *ctx = avctx->priv_data; ALSSpecificConfig *sconf = &ctx->sconf; ctx->avctx = avctx; @@ -2000,6 +2000,7 @@ static av_cold int decode_init(AVCodecContext *avctx) av_log(avctx, AV_LOG_ERROR, "Reading ALSSpecificConfig failed.\n"); return ret; } + channels = avctx->ch_layout.nb_channels; if ((ret = check_specific_config(ctx)) < 0) { return ret; |