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avcodec/libcodec2: reject packet sample counts that overflow int

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Fixes: out of array access
Fixes: 2jy_poc_codec2.zip / poc_codec2.raw
Fixes: jOQASNnOm6O7
Found-by: Jiale Yao <yaojiale02@163.com>
(cherry picked from commit 705ff11c2b)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Jiale Yao
2026-07-11 16:46:26 +02:00
committed by Michael Niedermayer
parent 9b70b9c2ee
commit 9bedaaa10b
1 changed files with 2 additions and 0 deletions
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libavcodec/libcodec2.c
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@@ -132,6 +132,8 @@ static int libcodec2_decode(AVCodecContext *avctx, AVFrame *frame,
int16_t *output;
nframes = pkt->size / avctx->block_align;
if (nframes > INT_MAX / avctx->frame_size)
return AVERROR_INVALIDDATA;
frame->nb_samples = avctx->frame_size * nframes;
ret = ff_get_buffer(avctx, frame, 0);