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avcodec/alsdec: clear last_acf_mantissa 

Fixes: use-of-uninitialized-value
Fixes: 70869/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ALS_fuzzer-5476567461986304

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2024-08-04 22:32:31 +02:00
parent de3f6c8888
commit db843c8910
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1 changed files with 1 additions and 1 deletions
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libavcodec/alsdec.c
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@ -2112,7 +2112,7 @@ static av_cold int decode_init(AVCodecContext *avctx)
ctx->acf = av_malloc_array(channels, sizeof(*ctx->acf));
ctx->shift_value = av_calloc(channels, sizeof(*ctx->shift_value));
ctx->last_shift_value = av_calloc(channels, sizeof(*ctx->last_shift_value));
ctx->last_acf_mantissa = av_malloc_array(channels, sizeof(*ctx->last_acf_mantissa));
ctx->last_acf_mantissa = av_calloc(channels, sizeof(*ctx->last_acf_mantissa));
ctx->raw_mantissa = av_calloc(channels, sizeof(*ctx->raw_mantissa));
ctx->larray = av_malloc_array(ctx->cur_frame_length * 4, sizeof(*ctx->larray));