On Sun, Sep 13, 2020 at 12:39:34AM +0200, Paul B Mahol wrote: > On Sat, Sep 12, 2020 at 06:43:30PM +0200, Michael Niedermayer wrote: > > Fixes: Timeout (too long -> 2sec) > > Fixes: > > 25439/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_NOTCHLC_fuzzer-5688211127664640 > > > > Found-by: continuous fuzzing process > > https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg > > Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > > --- > > libavcodec/notchlc.c | 3 +++ > > 1 file changed, 3 insertions(+) > > > > diff --git a/libavcodec/notchlc.c b/libavcodec/notchlc.c > > index 3f7079da70..e7e69b0c21 100644 > > --- a/libavcodec/notchlc.c > > +++ b/libavcodec/notchlc.c > > @@ -229,6 +229,9 @@ static int decode_blocks(AVCodecContext *avctx, AVFrame > > *p, ThreadFrame *frame, > > bytestream2_seek(&rgb, s->y_data_row_offsets, SEEK_SET); > > bytestream2_seek(gb, s->y_control_data_offset, SEEK_SET); > > > > + if ((avctx->height + 3) / 4 * ((avctx->width + 3) / 4) * 4 > > > bytestream2_get_bytes_left(gb)) > > + return AVERROR_INVALIDDATA; > > + > > dsty = (uint16_t *)p->data[0]; > > dsta = (uint16_t *)p->data[3]; > > ylinesize = p->linesize[0] / 2; > > -- > > 2.17.1 > > Is this correct at all?
Its the amount that is read from gb in the next loop just below the added check thx > > If you do not like timeouts than get smaller samples or reduce dimensions of > accepted files. > _______________________________________________ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-devel > > To unsubscribe, visit link above, or email > ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe". -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB There will always be a question for which you do not know the correct answer.
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