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Code Issues Releases Activity

libavcodec/alsdec.c: Add check for av_malloc_array() and av_calloc()

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Add check for the return value of av_malloc_array() and av_calloc()
to avoid potential NULL pointer dereference.

Fixes: dcfd24b10c ("avcodec/alsdec: Implement floating point sample data decoding")
Signed-off-by: Jiasheng Jiang <jiashengjiangcool@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Jiasheng Jiang
2025-07-10 16:26:39 +00:00
committed by Michael Niedermayer
parent 0a5ae743ef
commit 35a6de137a
1 changed files with 6 additions and 2 deletions
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8
libavcodec/alsdec.c
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@ -2119,8 +2119,8 @@ static av_cold int decode_init(AVCodecContext *avctx)
ctx->nbits = av_malloc_array(ctx->cur_frame_length, sizeof(*ctx->nbits)); ctx->nbits = av_malloc_array(ctx->cur_frame_length, sizeof(*ctx->nbits));
ctx->mlz = av_mallocz(sizeof(*ctx->mlz)); ctx->mlz = av_mallocz(sizeof(*ctx->mlz));
if (!ctx->mlz || !ctx->acf || !ctx->shift_value || !ctx->last_shift_value if (!ctx->larray || !ctx->nbits || !ctx->mlz || !ctx->acf || !ctx->shift_value
|| !ctx->last_acf_mantissa || !ctx->raw_mantissa) { || !ctx->last_shift_value || !ctx->last_acf_mantissa || !ctx->raw_mantissa) {
av_log(avctx, AV_LOG_ERROR, "Allocating buffer memory failed.\n"); av_log(avctx, AV_LOG_ERROR, "Allocating buffer memory failed.\n");
return AVERROR(ENOMEM); return AVERROR(ENOMEM);
} }
@ -2132,6 +2132,10 @@ static av_cold int decode_init(AVCodecContext *avctx)
for (c = 0; c < channels; ++c) { for (c = 0; c < channels; ++c) {
ctx->raw_mantissa[c] = av_calloc(ctx->cur_frame_length, sizeof(**ctx->raw_mantissa)); ctx->raw_mantissa[c] = av_calloc(ctx->cur_frame_length, sizeof(**ctx->raw_mantissa));
if (!ctx->raw_mantissa[c]) {
av_log(avctx, AV_LOG_ERROR, "Allocating buffer memory failed.\n");
return AVERROR(ENOMEM);
}
} }
} }