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commit 0511c27041518c5ecfabda4aaf6b83ecfbcc0d41 Author: Michael Niedermayer <[email protected]> AuthorDate: Fri Jun 26 20:58:49 2026 +0200 Commit: Michael Niedermayer <[email protected]> CommitDate: Tue Jul 21 22:59:48 2026 +0200 avcodec/ffv1dec: Reject bayer with unaligned slice coordinates Bayer was introduced (4f509c9e43) with combined_version 0x4000A, so no real bayer stream uses the old unaligned coordinates; reject it. Odd picture dimensions remain valid and are handled by aligning the bayer allocation to 2x2. Fixes: out of array write Fixes: fa6F4c0xA8el Fixes: 4f509c9e43 (ffv1dec: implement Bayer pixel format encoding) Found-by: Anonymous Signed-off-by: Michael Niedermayer <[email protected]> (cherry picked from commit cc17277c36cd7a87ccc99ae0e1b9eb88cbaa43ca) Signed-off-by: Michael Niedermayer <[email protected]> --- libavcodec/ffv1dec.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/libavcodec/ffv1dec.c b/libavcodec/ffv1dec.c index 6677e5c8b4..0c0689c81f 100644 --- a/libavcodec/ffv1dec.c +++ b/libavcodec/ffv1dec.c @@ -583,6 +583,12 @@ static int read_header(FFV1Context *f, RangeCoder *c) if (ret < 0) return ret; + if (f->bayer && f->combined_version <= 0x40002) { + av_log(f->avctx, AV_LOG_ERROR, + "Bayer requires aligned slice coordinates (combined_version > 0x40002)\n"); + return AVERROR_INVALIDDATA; + } + if (f->configured_pix_fmt != f->pix_fmt || f->configured_width != f->width || f->configured_height != f->height || _______________________________________________ ffmpeg-cvslog mailing list -- [email protected] To unsubscribe send an email to [email protected]
