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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-15 21:19:06 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-08-23 13:15:17 +0200 |
| commit | 9252b3ca23e3d365fea624df9786c00e1964382d (patch) | |
| tree | 156693caaee7e7bc1c2d907446fde02c1342d67c | |
| parent | 4954a78d337c73893938bd60f814e185cfba4f41 (diff) | |
| download | ffmpeg-9252b3ca23e3d365fea624df9786c00e1964382d.tar.gz | |
avcodec/tiff: reset sampling[] if its invalid
Fixes divission by 0
Fixes: clusterfuzz-testcase-minimized-5592896440893440
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit f08122fbe039a56ab3c24f74636b4b0efea97d85)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/tiff.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c index c5d5896f9a..37d8bcba1b 100644 --- a/libavcodec/tiff.c +++ b/libavcodec/tiff.c @@ -1019,6 +1019,7 @@ static int tiff_decode_tag(TiffContext *s, AVFrame *frame) s->subsampling[i] = ff_tget(&s->gb, type, s->le); if (s->subsampling[i] <= 0) { av_log(s->avctx, AV_LOG_ERROR, "subsampling %d is invalid\n", s->subsampling[i]); + s->subsampling[i] = 1; return AVERROR_INVALIDDATA; } } |