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commit b6a617c8bfc1b3b1a661013c93727a708b7e1b13 Author: Michael Niedermayer <[email protected]> AuthorDate: Sat Mar 14 00:50:17 2026 +0100 Commit: Michael Niedermayer <[email protected]> CommitDate: Sun Mar 15 00:49:58 2026 +0100 avcodec/cbs_h266_syntax_template: Check tile_y Fixes: invalid state leading to out of array access Fixes: 490615782/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VVC_fuzzer-4711353817563136 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 12303cd922d9cfb21b6160dcdd18083815f839b8) Signed-off-by: Michael Niedermayer <[email protected]> --- libavcodec/cbs_h266_syntax_template.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavcodec/cbs_h266_syntax_template.c b/libavcodec/cbs_h266_syntax_template.c index b411382aa7..98a8954943 100644 --- a/libavcodec/cbs_h266_syntax_template.c +++ b/libavcodec/cbs_h266_syntax_template.c @@ -1971,6 +1971,8 @@ static int FUNC(pps) (CodedBitstreamContext *ctx, RWContext *rw, current->slice_top_left_tile_idx[i] = tile_idx; tile_x = tile_idx % current->num_tile_columns; tile_y = tile_idx / current->num_tile_columns; + if (tile_y >= current->num_tile_rows) + return AVERROR_INVALIDDATA; if (tile_x != current->num_tile_columns - 1) { ues(pps_slice_width_in_tiles_minus1[i], 0, current->num_tile_columns - 1 - tile_x, 1, i); _______________________________________________ ffmpeg-cvslog mailing list -- [email protected] To unsubscribe send an email to [email protected]
