diff options
| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-12-18 17:55:09 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-12-20 18:35:12 +0100 |
| commit | 8374a747af247d45eb466fcb4aee90f3ae798aad (patch) | |
| tree | 64f8f243634cc0a9c65ca310705392503705c333 | |
| parent | 6af453ca389c56cb113876628cb173577faa9464 (diff) | |
| download | ffmpeg-8374a747af247d45eb466fcb4aee90f3ae798aad.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>
| -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 3cb4077550..4346304f54 100644 --- a/libavcodec/wavpack.c +++ b/libavcodec/wavpack.c @@ -129,7 +129,7 @@ static av_always_inline unsigned get_tail(GetBitContext *gb, unsigned k) e = (1LL << (p + 1)) - k - 1; res = get_bits_long(gb, p); if (res >= e) - res = (res << 1) - e + get_bits1(gb); + res = res * 2U - e + get_bits1(gb); return res; } |