Am Fr., 14. Juni 2019 um 21:40 Uhr schrieb Michael Niedermayer <g...@videolan.org>: > > ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Wed > Jun 5 12:18:54 2019 +0200| [e78b0f83748f92ea9e93b21c36082e0dd04d7cb1] | > committer: Michael Niedermayer > > avcodec/bitstream: Check for integer code truncation in build_table() > > Fixes: out of array read > Fixes: > 14563/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_AGM_fuzzer-5646451545210880 > > 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=e78b0f83748f92ea9e93b21c36082e0dd04d7cb1 > --- > > libavcodec/bitstream.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/libavcodec/bitstream.c b/libavcodec/bitstream.c > index 8762e5f4b2..590b490527 100644 > --- a/libavcodec/bitstream.c > +++ b/libavcodec/bitstream.c > @@ -226,6 +226,10 @@ static int build_table(VLC *vlc, int table_nb_bits, int > nb_codes, > /* note: realloc has been done, so reload tables */ > table = (volatile VLC_TYPE (*)[2])&vlc->table[table_index]; > table[j][0] = index; //code > + if (table[j][0] != index) {
> + avpriv_request_sample(NULL, "strange codes"); This broke building with --enable-hardcoded-tables, patch sent. Carl Eugen _______________________________________________ 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".
