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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-01-15 19:03:48 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-01-31 23:47:15 +0100 |
| commit | 0036b62c99116ff5b08a78e977a663d21a7aa645 (patch) | |
| tree | a2b4bd13eb3aeff267eec40d24194fd7ddc3244c | |
| parent | b51f1f5a1911b607e377d442cb9cbd74eb8d646a (diff) | |
| download | ffmpeg-0036b62c99116ff5b08a78e977a663d21a7aa645.tar.gz | |
avcodec/ulti: Check number of blocks at init
Fixes: Timeout
Fixes: 4832/clusterfuzz-testcase-4699096590843904
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 725353525e73bbe5b6b4d01528252675f2417a02)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/ulti.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavcodec/ulti.c b/libavcodec/ulti.c index e6f4374981..9e4c088b10 100644 --- a/libavcodec/ulti.c +++ b/libavcodec/ulti.c @@ -50,6 +50,8 @@ static av_cold int ulti_decode_init(AVCodecContext *avctx) s->width = avctx->width; s->height = avctx->height; s->blocks = (s->width / 8) * (s->height / 8); + if (s->blocks == 0) + return AVERROR_INVALIDDATA; avctx->pix_fmt = AV_PIX_FMT_YUV410P; s->ulti_codebook = ulti_codebook; |