avcodec/alsdec: clear last_acf_mantissa

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

Michael Niedermayer committed 2 years ago

Commit db843c81 parent de3f6c81 file · +1 −1Browse files

Unified · Split

libavcodec/alsdec.c+1−1

@@ -2112,7 +2112,7 @@ static av_cold int decode_init(AVCodecContext *avctx) · 2111 unmodified lines
2112	ctx->acf = av_malloc_array(channels, sizeof(*ctx->acf));	2112	ctx->acf = av_malloc_array(channels, sizeof(*ctx->acf));
2113	ctx->shift_value = av_calloc(channels, sizeof(*ctx->shift_value));	2113	ctx->shift_value = av_calloc(channels, sizeof(*ctx->shift_value));
2114	ctx->last_shift_value = av_calloc(channels, sizeof(*ctx->last_shift_value));	2114	ctx->last_shift_value = av_calloc(channels, sizeof(*ctx->last_shift_value));
2115	ctx->last_acf_mantissa = av_malloc_array(channels, sizeof(*ctx->last_acf_mantissa));	2115	ctx->last_acf_mantissa = av_calloc(channels, sizeof(*ctx->last_acf_mantissa));
2116	ctx->raw_mantissa = av_calloc(channels, sizeof(*ctx->raw_mantissa));	2116	ctx->raw_mantissa = av_calloc(channels, sizeof(*ctx->raw_mantissa));
2117		2117
2118	ctx->larray = av_malloc_array(ctx->cur_frame_length * 4, sizeof(*ctx->larray));	2118	ctx->larray = av_malloc_array(ctx->cur_frame_length * 4, sizeof(*ctx->larray));