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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-08-21 02:15:49 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-08-22 20:01:31 +0200 |
| commit | 6f03ffb47d51368a4bbc87702df8446e4660845d (patch) | |
| tree | 1e612526a6a886ea8b96b60562d91ac1a4ba778e /libavcodec/aacdec_template.c | |
| parent | a2e444d5bb2e3115d3afcc0cca9d1506c90436a2 (diff) | |
| download | ffmpeg-6f03ffb47d51368a4bbc87702df8446e4660845d.tar.gz | |
avcodec/aacdec_template: Fix running cleanup in decode_ics_info()
Fixes: out of array read
Fixes: 2873/clusterfuzz-testcase-minimized-5924145713905664
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Previous version reviewed-by: Alex Converse <alex.converse@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/aacdec_template.c')
| -rw-r--r-- | libavcodec/aacdec_template.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/libavcodec/aacdec_template.c b/libavcodec/aacdec_template.c index a539f74e6f..c59fd6aef6 100644 --- a/libavcodec/aacdec_template.c +++ b/libavcodec/aacdec_template.c @@ -1281,6 +1281,8 @@ static int decode_ics_info(AACContext *ac, IndividualChannelStream *ics, const MPEG4AudioConfig *const m4ac = &ac->oc[1].m4ac; const int aot = m4ac->object_type; const int sampling_index = m4ac->sampling_index; + int ret_fail = AVERROR_INVALIDDATA; + if (aot != AOT_ER_AAC_ELD) { if (get_bits1(gb)) { av_log(ac->avctx, AV_LOG_ERROR, "Reserved bit set.\n"); @@ -1331,8 +1333,10 @@ static int decode_ics_info(AACContext *ac, IndividualChannelStream *ics, ics->num_swb = ff_aac_num_swb_512[sampling_index]; ics->tns_max_bands = ff_tns_max_bands_512[sampling_index]; } - if (!ics->num_swb || !ics->swb_offset) - return AVERROR_BUG; + if (!ics->num_swb || !ics->swb_offset) { + ret_fail = AVERROR_BUG; + goto fail; + } } else { ics->swb_offset = ff_swb_offset_1024[sampling_index]; ics->num_swb = ff_aac_num_swb_1024[sampling_index]; @@ -1356,7 +1360,8 @@ static int decode_ics_info(AACContext *ac, IndividualChannelStream *ics, if (aot == AOT_ER_AAC_LD) { av_log(ac->avctx, AV_LOG_ERROR, "LTP in ER AAC LD not yet implemented.\n"); - return AVERROR_PATCHWELCOME; + ret_fail = AVERROR_PATCHWELCOME; + goto fail; } if ((ics->ltp.present = get_bits(gb, 1))) decode_ltp(&ics->ltp, gb, ics->max_sfb); @@ -1375,7 +1380,7 @@ static int decode_ics_info(AACContext *ac, IndividualChannelStream *ics, return 0; fail: ics->max_sfb = 0; - return AVERROR_INVALIDDATA; + return ret_fail; } /** |