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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-10-30 23:21:40 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-01-31 22:56:14 +0100 |
| commit | 35c1e95b41e9a626be39629993eb23dae2f80fd7 (patch) | |
| tree | 950389cefc842ed86a1cff92401bb4dcc132a918 | |
| parent | 9d4ad2dbfdc770f1cab85a7b176024924303be6b (diff) | |
| download | ffmpeg-35c1e95b41e9a626be39629993eb23dae2f80fd7.tar.gz | |
avcodec/xan: Improve overlapping check
Fixes: memcpy-param-overlap
Fixes: 3612/clusterfuzz-testcase-minimized-6393461273001984
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 e8fafef1db43ead4eae5a6301ccc300e73aa47da)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/xan.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/xan.c b/libavcodec/xan.c index 662386af9a..85fa8e7394 100644 --- a/libavcodec/xan.c +++ b/libavcodec/xan.c @@ -262,7 +262,7 @@ static inline void xan_wc3_copy_pixel_run(XanContext *s, AVFrame *frame, prevframe_index = (y + motion_y) * stride + x + motion_x; prevframe_x = x + motion_x; - if (prev_palette_plane == palette_plane && FFABS(curframe_index - prevframe_index) < pixel_count) { + if (prev_palette_plane == palette_plane && FFABS(motion_x + width*motion_y) < pixel_count) { avpriv_request_sample(s->avctx, "Overlapping copy"); return ; } |