Michael Niedermayer: > Fixes: out of array access > Fixes: > 68863/clusterfuzz-testcase-minimized-ffmpeg_dem_IAMF_fuzzer-4833546039525376 > > Found-by: continuous fuzzing process > https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg > Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > --- > libavcodec/mpeg4audio.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/libavcodec/mpeg4audio.c b/libavcodec/mpeg4audio.c > index fbd2a8f811a..ae18944f0d5 100644 > --- a/libavcodec/mpeg4audio.c > +++ b/libavcodec/mpeg4audio.c > @@ -94,6 +94,10 @@ int ff_mpeg4audio_get_config_gb(MPEG4AudioConfig *c, > GetBitContext *gb, > { > int specific_config_bitindex, ret; > int start_bit_index = get_bits_count(gb); > + > + if (get_bits_left(gb) < 5+4+4) > + return AVERROR_INVALIDDATA; > + > c->object_type = get_object_type(gb); > c->sample_rate = get_sample_rate(gb, &c->sampling_index); > c->chan_config = get_bits(gb, 4);
This is not a proper fix. The real bug seems to be that avpriv_mpeg4audio_get_config2() relies on the buffer to be padded, but iamf_parse.c does not add padding. - Andreas _______________________________________________ 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".
