diff options
| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-15 22:00:47 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-16 18:41:10 +0200 |
| commit | 90da43557f7257d72e95504f63ae6504406d6eab (patch) | |
| tree | 53ec5e034a6577892a01231a3d7a4d5642408fc9 /libavcodec/apedec.c | |
| parent | 737e6bf2162b89d396f4d477bfe8c99f1dd885de (diff) | |
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>
Diffstat (limited to 'libavcodec/apedec.c')
| -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 bf481ba354..050523601d 100644 --- a/libavcodec/apedec.c +++ b/libavcodec/apedec.c @@ -1337,7 +1337,7 @@ static void do_apply_filter(APEContext *ctx, int version, APEFilter *f, absres = FFABSU(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; |