[FFmpeg-devel] [PATCH] avformat/img2dec: fix logic error in GEM Raster file probe

[Peter Ross]

On Fri, Jan 21, 2022 at 09:14:05AM +1100, Peter Ross wrote:
> Use correct logic to express limits of the planes and pattern_size fields.
> 
> Fix ticket# 9605
> 
> Signed-off-by: Peter Ross <pross at xvid.org>
> ---
>  libavformat/img2dec.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/libavformat/img2dec.c b/libavformat/img2dec.c
> index 4d5ac51b53..2583ca2465 100644
> --- a/libavformat/img2dec.c
> +++ b/libavformat/img2dec.c
> @@ -1115,8 +1115,8 @@ static int gem_probe(const AVProbeData *p)
>      int ret = 0;
>      if ( AV_RB16(b     ) >= 1 && AV_RB16(b    ) <= 3  &&
>           AV_RB16(b +  2) >= 8 && AV_RB16(b + 2) <= 779 &&
> -        (AV_RB16(b +  4) > 0  || AV_RB16(b + 4) <= 8) &&
> -        (AV_RB16(b +  6) > 0  || AV_RB16(b + 6) <= 8) &&
> +        (AV_RB16(b +  4) > 0  && AV_RB16(b + 4) <= 32) && /* planes */
> +        (AV_RB16(b +  6) > 0  && AV_RB16(b + 6) <= 8) && /* pattern_size */
>           AV_RB16(b +  8) &&
>           AV_RB16(b + 10) &&
>           AV_RB16(b + 12) &&
> -- 
> 2.34.1

will apply in a couple of days

-- Peter
(A907 E02F A6E5 0CD2 34CD 20D2 6760 79C5 AC40 DD6B)
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