ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Tue Jul 19 01:25:01 2022 +0200| [15785e044ee1265464bb4f3ed727e2a8074f97b4] | committer: Michael Niedermayer
avcodec/ffv1dec: consider run increase in minimal golomb frame size Fixes: Timeout Fixes: 49160/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FFV1_fuzzer-5672826144686080 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: James Almer <jamr...@gmail.com> Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=15785e044ee1265464bb4f3ed727e2a8074f97b4 --- libavcodec/ffv1dec.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/libavcodec/ffv1dec.c b/libavcodec/ffv1dec.c index c7efd0bb45..d71584505d 100644 --- a/libavcodec/ffv1dec.c +++ b/libavcodec/ffv1dec.c @@ -883,7 +883,10 @@ static int decode_frame(AVCodecContext *avctx, AVFrame *rframe, if (buf_size < avctx->width * avctx->height / (128*8)) return AVERROR_INVALIDDATA; } else { - if (buf_size < avctx->height / 8) + int w = avctx->width; + for (int i = 0; w > (1<<ff_log2_run[i]); i++) + w -= ff_log2_run[i]; + if (buf_size < (avctx->height + i + 6)/ 8) return AVERROR_INVALIDDATA; } _______________________________________________ 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".
