fix(ffmpeg): CVE-2026-8461 - Fix heap out-of-bounds write in MagicYUV decoder (PixelSmash)#32
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Fix heap out-of-bounds write in MagicYUV decoder (PixelSmash). Move slice_height validation outside of interlaced-only block so it applies to both interlaced and progressive modes. Origin: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23159 Bug: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23159 Generated-By: deepseek-v4 Co-Authored-By: hudeng <hudeng@deepin.org>
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CVE-2026-8461: PixelSmash - Heap OOB write in MagicYUV decoder
Fix heap out-of-bounds write in FFmpeg's libavcodec MagicYUV decoder caused by inconsistency between how the frame allocator and decoder compute chroma plane heights when slice_height is odd.
Changes
< 2to<= s->interlacedso progressive (interlaced=0) uses<= 0instead of< 2References
Patch
From upstream 7-line patch: validates slice_height against chroma subsampling shift.