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commit 6e8b6228c9b5d5dd04396ef936d113196166eb37 Author: Michael Niedermayer <[email protected]> AuthorDate: Mon Dec 22 23:17:24 2025 +0100 Commit: Michael Niedermayer <[email protected]> CommitDate: Mon May 4 15:56:59 2026 +0200 avcodec/jpeg2000dec: Make M_b check broader Fixes: shift exponent -1 is negative Fixes: 429330004/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_JPEG2000_DEC_fuzzer-4733213845291008 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <[email protected]> (cherry picked from commit d60c1d72c1299e683c1d2f86cb4332b4d88348a5) Signed-off-by: Michael Niedermayer <[email protected]> --- libavcodec/jpeg2000dec.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavcodec/jpeg2000dec.c b/libavcodec/jpeg2000dec.c index 6a86375e0c..3dce0c1909 100644 --- a/libavcodec/jpeg2000dec.c +++ b/libavcodec/jpeg2000dec.c @@ -2237,8 +2237,8 @@ static inline int tile_codeblocks(const Jpeg2000DecoderContext *s, Jpeg2000Tile band->coord[1][0] == band->coord[1][1]) continue; - if ((codsty->cblk_style & JPEG2000_CTSY_HTJ2K_F) && M_b >= 31) { - avpriv_request_sample(s->avctx, "JPEG2000_CTSY_HTJ2K_F and M_b >= 31"); + if (M_b >= 31) { + avpriv_request_sample(s->avctx, "M_b >= 31"); return AVERROR_PATCHWELCOME; } _______________________________________________ ffmpeg-cvslog mailing list -- [email protected] To unsubscribe send an email to [email protected]
