ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Tue Feb 1 18:42:34 2022 +0100| [4fdfe430c12225e819f68993474bd2f473c7e8b1] | committer: Michael Niedermayer
avcodec/av1dec: Check tile_cols Fixes: division by zero Fixes: 43769/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_AV1_fuzzer-5392562205097984 Fixes: 43950/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_AV1_fuzzer-5769210217758720 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=4fdfe430c12225e819f68993474bd2f473c7e8b1 --- libavcodec/av1dec.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/av1dec.c b/libavcodec/av1dec.c index a274d8867e..613efc5d11 100644 --- a/libavcodec/av1dec.c +++ b/libavcodec/av1dec.c @@ -398,6 +398,9 @@ static int get_tiles_info(AVCodecContext *avctx, const AV1RawTileGroup *tile_gro s->tg_start = tile_group->tg_start; s->tg_end = tile_group->tg_end; + if (s->raw_frame_header->tile_cols == 0) + return AVERROR_INVALIDDATA; + for (tile_num = tile_group->tg_start; tile_num <= tile_group->tg_end; tile_num++) { tile_row = tile_num / s->raw_frame_header->tile_cols; tile_col = tile_num % s->raw_frame_header->tile_cols; _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
