diff options
| author | Michael Niedermayer <[email protected]> | 2019-12-14 00:37:27 +0100 |
|---|---|---|
| committer | Michael Niedermayer <[email protected]> | 2020-07-01 13:33:44 +0200 |
| commit | 762d17ddac88d400415636f632b942d59181f48c (patch) | |
| tree | d08e86be715366856cf0ad8e1aebb0a200df4def | |
| parent | 27153417262cbcc4e4fe37e9a562f74a983ebb7b (diff) | |
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 <[email protected]>
Signed-off-by: Michael Niedermayer <[email protected]>
(cherry picked from commit f064c7c449f162a9011ad890f26ceeca26934d22)
Signed-off-by: Michael Niedermayer <[email protected]>
| -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++){ |