diff options
| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-12-18 17:55:09 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2023-04-21 01:55:10 +0200 |
| commit | e02bd110909126678dfc3f4015ba789b1fd9a22a (patch) | |
| tree | e3236061598b58b0c06bba9f6d925e1f5bce0f0a | |
| parent | 9980d388b96f5081ccf352cf8e5034d3b438fc52 (diff) | |
| download | ffmpeg-e02bd110909126678dfc3f4015ba789b1fd9a22a.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 d0242809fe..132ed668b9 100644 --- a/libavcodec/wavpack.c +++ b/libavcodec/wavpack.c @@ -95,7 +95,7 @@ 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; } |