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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-12-14 00:37:27 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-12-15 01:00:34 +0100 |
| commit | f064c7c449f162a9011ad890f26ceeca26934d22 (patch) | |
| tree | 756f4bfedec87feb5e3b6aec66e64bb2a606452b | |
| parent | 1f8e43938bc2cc43ab1a875456aea373e0b587b9 (diff) | |
| download | ffmpeg-f064c7c449f162a9011ad890f26ceeca26934d22.tar.gz | |
avcodec/mp3_header_decompress_bsf: Check sample_rate_index
Fixes: out of array read
Fixes: 19309/clusterfuzz-testcase-minimized-ffmpeg_BSF_MP3_HEADER_DECOMPRESS_fuzzer-5651002950942720
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/mp3_header_decompress_bsf.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavcodec/mp3_header_decompress_bsf.c b/libavcodec/mp3_header_decompress_bsf.c index 294858953c..ab3d420300 100644 --- a/libavcodec/mp3_header_decompress_bsf.c +++ b/libavcodec/mp3_header_decompress_bsf.c @@ -62,6 +62,11 @@ static int mp3_header_decompress(AVBSFContext *ctx, AVPacket *out) lsf = sample_rate < (24000+32000)/2; mpeg25 = sample_rate < (12000+16000)/2; sample_rate_index= (header>>10)&3; + if (sample_rate_index == 3) { + ret = AVERROR_INVALIDDATA; + goto fail; + } + sample_rate= avpriv_mpa_freq_tab[sample_rate_index] >> (lsf + mpeg25); //in case sample rate is a little off for(bitrate_index=2; bitrate_index<30; bitrate_index++){ |