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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-10 19:37:50 +0300 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-06-02 02:14:38 +0300 |
| commit | 080edf29e74a8aace6ca23ef34740caae6a88039 (patch) | |
| tree | 8e32e161a5547e98497de7c23a66800d004b6301 | |
| parent | be9268e35044cc42aca236f1bb5c9af63c7a854d (diff) | |
avcodec/webp: Fixes null pointer dereference
Fixes: 1470/clusterfuzz-testcase-minimized-5404421666111488
Fixes: 1472/clusterfuzz-testcase-minimized-5677426430443520
Fixes: 1875/clusterfuzz-testcase-minimized-5536474562822144
Approved-by: BBB
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 67020711b7d45afa073ef671f755765035a64373)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/webp.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/webp.c b/libavcodec/webp.c index ef7b26c4c8..3d63cb8349 100644 --- a/libavcodec/webp.c +++ b/libavcodec/webp.c @@ -1351,6 +1351,9 @@ static int vp8_lossy_decode_frame(AVCodecContext *avctx, AVFrame *p, if (ret < 0) return ret; + if (!*got_frame) + return AVERROR_INVALIDDATA; + update_canvas_size(avctx, avctx->width, avctx->height); if (s->has_alpha) { |