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| author | Alex Converse <alex.converse@gmail.com> | 2010-03-09 09:27:11 +0000 |
|---|---|---|
| committer | Alex Converse <alex.converse@gmail.com> | 2010-03-09 09:27:11 +0000 |
| commit | 8a9ee4b102a0620984d9963350bb378c778acb9d (patch) | |
| tree | 2cf6d1335a29cf7d270fbaa5fd6a652aa0f653b7 /libavcodec/aacsbr.c | |
| parent | e8ff21fdf594b5b4fc851ca99935dddc2e534cb0 (diff) | |
| download | ffmpeg-8a9ee4b102a0620984d9963350bb378c778acb9d.tar.gz | |
aacsbr: Check for illegal values of bs_pointer in sbr_read_grid().
Originally committed as revision 22380 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/aacsbr.c')
| -rw-r--r-- | libavcodec/aacsbr.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/libavcodec/aacsbr.c b/libavcodec/aacsbr.c index e00d55c0cb..a093dcf006 100644 --- a/libavcodec/aacsbr.c +++ b/libavcodec/aacsbr.c @@ -628,6 +628,8 @@ static int read_sbr_grid(AACContext *ac, SpectralBandReplication *sbr, if (ch_data->bs_num_env[1] == 1) ch_data->bs_amp_res = 0; + ch_data->bs_pointer = 0; + ch_data->bs_freq_res[1] = get_bits1(gb); for (i = 1; i < ch_data->bs_num_env[1]; i++) ch_data->bs_freq_res[i + 1] = ch_data->bs_freq_res[1]; @@ -675,6 +677,12 @@ static int read_sbr_grid(AACContext *ac, SpectralBandReplication *sbr, break; } + if (ch_data->bs_pointer > ch_data->bs_num_env[1] + 1) { + av_log(ac->avccontext, AV_LOG_ERROR, + "Invalid bitstream, bs_pointer points to a middle noise border outside the time borders table: %d\n", + ch_data->bs_pointer); + return -1; + } if (ch_data->bs_frame_class == FIXFIX && ch_data->bs_num_env[1] > 4) { av_log(ac->avccontext, AV_LOG_ERROR, "Invalid bitstream, too many SBR envelopes in FIXFIX type SBR frame: %d\n", |