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| author | Niklas Haas <git@haasn.dev> | 2025-07-30 13:36:21 +0200 |
|---|---|---|
| committer | Niklas Haas <ffmpeg@haasn.dev> | 2025-07-31 11:32:20 +0000 |
| commit | b7946098b19af4f06661213d591a5ed9cd3d26ff (patch) | |
| tree | 586ab73ba050860f80c196896904b6e95aff85cf /tools/source2c | |
| parent | 119d127d05c910db0f0d31c1b124a8d60fd0d75d (diff) | |
| download | ffmpeg-b7946098b19af4f06661213d591a5ed9cd3d26ff.tar.gz | |
swscale/alphablend: don't overread alpha plane on subsampled odd size
This function overreads the input plane for odd dimensions, because the
chroma plane is always rounded up, which means (xy << subsample) + 1 exceeds
the actual alpha plane size.
To verify:
valgrind ffmpeg -pix_fmt yuva420p -f lavfi -i color -vf \
"scale=1x1,format=yuva420p,scale=alphablend=uniform_color,format=yuv420p \
-vframes 1 -f null -
Fixes: https://trac.ffmpeg.org/ticket/11692
Diffstat (limited to 'tools/source2c')
0 files changed, 0 insertions, 0 deletions