ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Sun Jun 16 21:01:50 2019 +0200| [fb4a4557d15bce601e2462207648741600fa273f] | committer: Michael Niedermayer
avcodec/atrac9dec: Check q_unit_cnt in parse_band_ext() Fixes: global-buffer-overflow Fixes: 15247/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ATRAC9_fuzzer-5671602181636096 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=fb4a4557d15bce601e2462207648741600fa273f --- libavcodec/atrac9dec.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavcodec/atrac9dec.c b/libavcodec/atrac9dec.c index 08fe483e39..4d490daeb0 100644 --- a/libavcodec/atrac9dec.c +++ b/libavcodec/atrac9dec.c @@ -202,6 +202,8 @@ static inline int parse_band_ext(ATRAC9Context *s, ATRAC9BlockData *b, int ext_band = 0; if (b->has_band_ext) { + if (b->q_unit_cnt < 13) + return AVERROR_INVALIDDATA; ext_band = at9_tab_band_ext_group[b->q_unit_cnt - 13][2]; if (stereo) { b->channel[1].band_ext = get_bits(gb, 2); _______________________________________________ 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".
