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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-04 23:41:28 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-08 17:02:02 +0200 |
| commit | aaeec1c654a2c139a7bc95e677a23d8ac57f1c5e (patch) | |
| tree | d7c8b9ec9293a2281fd5f19bd85a4bb54428ead6 /libavcodec | |
| parent | 2cb656ad1197224470889a76d6b3d0bcb8cb0f34 (diff) | |
| download | ffmpeg-aaeec1c654a2c139a7bc95e677a23d8ac57f1c5e.tar.gz | |
avcodec/wavpack: Fix signed integer overflow: 1285114081 * 2 cannot be represented in type 'int'
Fixes: 945/clusterfuzz-testcase-6037937588273152
Fixes: integer overflow
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/wavpack.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/wavpack.c b/libavcodec/wavpack.c index bc4402f638..d2ba97ee2c 100644 --- a/libavcodec/wavpack.c +++ b/libavcodec/wavpack.c @@ -240,7 +240,7 @@ static int wv_get_value(WavpackFrameContext *ctx, GetBitContext *gb, if (get_bits_left(gb) <= 0) goto error; } else { - int mid = (base * 2 + add + 1) >> 1; + int mid = (base * 2U + add + 1) >> 1; while (add > c->error_limit) { if (get_bits_left(gb) <= 0) goto error; @@ -249,7 +249,7 @@ static int wv_get_value(WavpackFrameContext *ctx, GetBitContext *gb, base = mid; } else add = mid - base - 1; - mid = (base * 2 + add + 1) >> 1; + mid = (base * 2U + add + 1) >> 1; } ret = mid; } |