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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-08-14 23:30:22 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-08-23 20:03:03 +0200 |
| commit | 7086491fa0eca4ad647b5c9fae6d07344cc44ec0 (patch) | |
| tree | cf00aa262d87ea7dc979def639f6fc615fc0e66f | |
| parent | 8ab944c4c33e7bc2d5c0ebb62a57099817b350c2 (diff) | |
| download | ffmpeg-7086491fa0eca4ad647b5c9fae6d07344cc44ec0.tar.gz | |
avcodec/mpegaudiodec_template: use unsigned shift in handle_crc()
Fixes: left shift of 192 by 24 places cannot be represented in type 'int'
Fixes: 49577/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MP1FLOAT_fuzzer-5205996678545408
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/mpegaudiodec_template.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/mpegaudiodec_template.c b/libavcodec/mpegaudiodec_template.c index a28cac9867..a711154a3c 100644 --- a/libavcodec/mpegaudiodec_template.c +++ b/libavcodec/mpegaudiodec_template.c @@ -374,7 +374,7 @@ static int handle_crc(MPADecodeContext *s, int sec_len) crc_val = av_crc(crc_tab, crc_val, &buf[6], sec_byte_len); AV_WB32(tmp_buf, - ((buf[6 + sec_byte_len] & (0xFF00 >> sec_rem_bits)) << 24) + + ((buf[6 + sec_byte_len] & (0xFF00U >> sec_rem_bits)) << 24) + ((s->crc << 16) >> sec_rem_bits)); crc_val = av_crc(crc_tab, crc_val, tmp_buf, 3); |