On Wed, Oct 14, 2020 at 05:53:07PM +0200, Michael Niedermayer wrote: > Fixes: OOM > Fixes: > 26168/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_NOTCHLC_fuzzer-6019839015256064 > > 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..0254e7d76a 100644 > --- a/libavcodec/notchlc.c > +++ b/libavcodec/notchlc.c > @@ -490,6 +490,9 @@ static int decode_frame(AVCodecContext *avctx, > > bytestream2_init(gb, s->lzf_buffer, uncompressed_size); > } else if (s->format == 1) { > + if (bytestream2_get_bytes_left(gb) < uncompressed_size / 255)
From where you picked this division? And expecially 255 number? > + return AVERROR_INVALIDDATA; > + > av_fast_padded_malloc(&s->uncompressed_buffer, &s->uncompressed_size, > uncompressed_size); > if (!s->uncompressed_buffer) > -- > 2.17.1 > > _______________________________________________ > 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". _______________________________________________ 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".
