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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-15 22:00:47 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-10-06 13:59:34 +0200 |
| commit | 29f073ca464e202c4621828ce925072757769eab (patch) | |
| tree | a3421da04162dfac517da394c9c003940a3addab | |
| parent | c8b796b47230f8af9fa9cea3fab6e213db4e6768 (diff) | |
| download | ffmpeg-29f073ca464e202c4621828ce925072757769eab.tar.gz | |
avcodec/apedec: Fix integer overflow in intermediate
Fixes: signed integer overflow: 559334865 * 4 cannot be represented in type 'int'
Fixes: 37929/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APE_fuzzer-6751932295806976
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 90da43557f7257d72e95504f63ae6504406d6eab)
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 e11ee0a708..7db1196d3f 100644 --- a/libavcodec/apedec.c +++ b/libavcodec/apedec.c @@ -1286,7 +1286,7 @@ static void do_apply_filter(APEContext *ctx, int version, APEFilter *f, absres = res < 0 ? -(unsigned)res : res; if (absres) *f->adaptcoeffs = APESIGN(res) * - (8 << ((absres > f->avg * 3) + (absres > f->avg * 4 / 3))); + (8 << ((absres > f->avg * 3) + (absres > (f->avg + f->avg / 3)))); /* equivalent to the following code if (absres <= f->avg * 4 / 3) *f->adaptcoeffs = APESIGN(res) * 8; |