RepoMirrors
/
ffmpeg
mirror of https://git.ffmpeg.org/ffmpeg.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

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>
This commit is contained in:
Michael Niedermayer 2017-10-30 23:21:40 +01:00
parent 26868f80e0
commit e8fafef1db
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
libavcodec/xan.c
View File

@ -263,7 +263,7 @@ 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 ;
}