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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-02-19 00:05:51 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-03-01 23:25:08 +0100 |
| commit | 4801eea0d465cd54670e7c19322705544e3e7524 (patch) | |
| tree | 06a27bfbf73677d9e0a2214a18c5a72c0447708e | |
| parent | 694d9d53685333771823285457bdd1ef1480eafc (diff) | |
| download | ffmpeg-4801eea0d465cd54670e7c19322705544e3e7524.tar.gz | |
avcodec/jpeg2000dwt: Fix integer overflow in dwt_decode97_int()
Fixes: runtime error: signed integer overflow: 2147483598 + 128 cannot be represented in type 'int'
Fixes: 12926/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_JPEG2000_fuzzer-5705100733972480
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/jpeg2000dwt.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/jpeg2000dwt.c b/libavcodec/jpeg2000dwt.c index ce1678a3d7..badf0f8cd0 100644 --- a/libavcodec/jpeg2000dwt.c +++ b/libavcodec/jpeg2000dwt.c @@ -531,7 +531,7 @@ static void dwt_decode97_int(DWTContext *s, int32_t *t) } for (i = 0; i < w * h; i++) - data[i] = (data[i] + ((1<<I_PRESHIFT)>>1)) >> I_PRESHIFT; + data[i] = (data[i] + ((1LL<<I_PRESHIFT)>>1)) >> I_PRESHIFT; } int ff_jpeg2000_dwt_init(DWTContext *s, int border[2][2], |