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avcodec/wnv1: Check for width =1 

The decoder only outputs pixels for width >1 images, fail early

Fixes: Timeout
Fixes: 48298/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WNV1_fuzzer-6198626319204352

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2022-07-03 02:31:47 +02:00
parent eee7364c90
commit d98d5a436a
1 changed files with 3 additions and 0 deletions
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3
libavcodec/wnv1.c
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@ -125,6 +125,9 @@ static av_cold int decode_init(AVCodecContext *avctx)
{
static AVOnce init_static_once = AV_ONCE_INIT;
if (avctx->width <= 1)
return AVERROR_INVALIDDATA;
avctx->pix_fmt = AV_PIX_FMT_YUV422P;
ff_thread_once(&init_static_once, wnv1_init_static);