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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-29 20:53:53 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-10-16 21:19:24 +0200 |
| commit | 3c81d7025e9b6282b3e843b3eb9a4d71466d9f95 (patch) | |
| tree | d2addd5b9b2b06af695d6c787935717b8db2f570 | |
| parent | 9236882745e9ac0658657a05a7edebdea3fa41b7 (diff) | |
| download | ffmpeg-3c81d7025e9b6282b3e843b3eb9a4d71466d9f95.tar.gz | |
avcodec/apedec: Use 64bit to avoid overflow
Fixes: runtime error: signed integer overflow: 727298502 * 3 cannot be represented in type 'int'
Fixes: 39172/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APE_fuzzer-638602483033702
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 f059b56195da9c0e2c11a5f7f357a3d6101e6bf0)
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 8a7ba73815..d05aa741ef 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 + f->avg / 3)))); + (8 << ((absres > f->avg * 3LL) + (absres > (f->avg + f->avg / 3)))); /* equivalent to the following code if (absres <= f->avg * 4 / 3) *f->adaptcoeffs = APESIGN(res) * 8; |