[FFmpeg-devel] [PATCH 02/12] avcodec/dstdec: Fix integer overflow in samples_per_frame computation

[Paul B Mahol]

lgtm

On 9/25/19, Michael Niedermayer <michael at niedermayer.cc> wrote:
> Fixes: Timeout (? -> 2ms)
> Fixes:
> 17616/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DST_fuzzer-5198057947267072
>
> Found-by: continuous fuzzing process
> https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
> Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> ---
>  libavcodec/dstdec.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/libavcodec/dstdec.c b/libavcodec/dstdec.c
> index 0614c99c4b..8a1bc6a738 100644
> --- a/libavcodec/dstdec.c
> +++ b/libavcodec/dstdec.c
> @@ -37,7 +37,7 @@
>  #define DST_MAX_CHANNELS 6
>  #define DST_MAX_ELEMENTS (2 * DST_MAX_CHANNELS)
>
> -#define DSD_FS44(sample_rate) (sample_rate * 8 / 44100)
> +#define DSD_FS44(sample_rate) (sample_rate * 8LL / 44100)
>
>  #define DST_SAMPLES_PER_FRAME(sample_rate) (588 * DSD_FS44(sample_rate))
>
> --
> 2.23.0
>
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