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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-12-18 17:55:09 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2023-02-21 23:43:56 +0100 |
| commit | 194a9429b2543609364a26af72e6d3f1d7bc1934 (patch) | |
| tree | 2fed37a3269dd1ce96e7690fd74f447320fffa55 | |
| parent | 7d2360f8d67f386f0a89471f0e1857857464a797 (diff) | |
| download | ffmpeg-194a9429b2543609364a26af72e6d3f1d7bc1934.tar.gz | |
avcodec/wavpack: Avoid undefined shift in get_tail()
Fixes: left shift of 1208485947 by 1 places cannot be represented in type 'int'
Fixes: 54058/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WAVPACK_fuzzer-5827521084260352
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 8374a747af247d45eb466fcb4aee90f3ae798aad)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/wavpack.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/wavpack.c b/libavcodec/wavpack.c index 45c49518f2..32eb2d46bf 100644 --- a/libavcodec/wavpack.c +++ b/libavcodec/wavpack.c @@ -129,7 +129,7 @@ static av_always_inline unsigned get_tail(GetBitContext *gb, int k) e = (1 << (p + 1)) - k - 1; res = get_bitsz(gb, p); if (res >= e) - res = (res << 1) - e + get_bits1(gb); + res = res * 2U - e + get_bits1(gb); return res; } |