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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-02-19 00:05:51 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-03-24 10:39:03 +0100 |
| commit | 6299f85cf20e4d704f80bc856635d68a61122053 (patch) | |
| tree | b965b829ac7071be6ab30bebaa1a1b23eb1fac61 | |
| parent | 8a598030e2d0d1034ac0ed18623dc690e1d59b86 (diff) | |
| download | ffmpeg-6299f85cf20e4d704f80bc856635d68a61122053.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>
(cherry picked from commit 4801eea0d465cd54670e7c19322705544e3e7524)
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 8092297b8c..17d81dc56f 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], |