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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-10-29 18:30:07 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-11-21 23:41:47 +0100 |
| commit | 6b430f066b9d6637f145fe228e7950a03820a1ab (patch) | |
| tree | 26329e995d3daa30733f90d202d30d59517a4fa0 | |
| parent | 17d5c21b3d1249672323bd1ab09718e29ce77e91 (diff) | |
| download | ffmpeg-6b430f066b9d6637f145fe228e7950a03820a1ab.tar.gz | |
avcodec/apedec: Fixes integer overflow of res+*data in do_apply_filter()
Fixes: signed integer overflow: 7400 + 2147482786 cannot be represented in type 'int'
Fixes: 18405/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APE_fuzzer-5708834760294400
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 dc3f327e7403a34c88a900f0b8de55b4afd7cf6c)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/apedec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/apedec.c b/libavcodec/apedec.c index 0c0c22b18a..7d07f5f8f1 100644 --- a/libavcodec/apedec.c +++ b/libavcodec/apedec.c @@ -1268,7 +1268,7 @@ static void do_apply_filter(APEContext *ctx, int version, APEFilter *f, f->adaptcoeffs - order, order, APESIGN(*data)); res = (int)(res + (1U << (fracbits - 1))) >> fracbits; - res += *data; + res += (unsigned)*data; *data++ = res; /* Update the output history */ |