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avcodec/d3d12va_vp9: check size of frame bitstream against available buffer size

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(cherry picked from commit a633df56a4)
This commit is contained in:
Timo Rothenpieler
2026-07-09 00:50:32 +02:00
committed by ffmpeg-devel
parent ae0feeac8d
commit 3abec89a45
1 changed files with 6 additions and 0 deletions
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6
libavcodec/d3d12va_vp9.c
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@@ -88,12 +88,18 @@ static int d3d12va_vp9_decode_slice(AVCodecContext *avctx, const uint8_t *buffer
static int update_input_arguments(AVCodecContext *avctx, D3D12_VIDEO_DECODE_INPUT_STREAM_ARGUMENTS *input_args, ID3D12Resource *buffer)
{
D3D12VADecodeContext *ctx = D3D12VA_DECODE_CONTEXT(avctx);
const VP9SharedContext *h = avctx->priv_data;
VP9DecodePictureContext *ctx_pic = h->frames[CUR_FRAME].hwaccel_picture_private;
void *mapped_data;
D3D12_VIDEO_DECODE_FRAME_ARGUMENT *args;
if (ctx_pic->slice.SliceBytesInBuffer > ctx->bitstream_size) {
av_log(avctx, AV_LOG_ERROR, "Input frame bitstream size exceeds internal buffer!\n");
return AVERROR(EINVAL);
}
if (FAILED(ID3D12Resource_Map(buffer, 0, NULL, &mapped_data))) {
av_log(avctx, AV_LOG_ERROR, "Failed to map D3D12 Buffer resource!\n");
return AVERROR(EINVAL);