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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-03-28 00:12:17 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-04-13 23:39:50 +0200 |
| commit | 7ea021e7bf974256e5b215e3a328855db9d41b5f (patch) | |
| tree | 0a4a7cfd77260213e822bc14060ec25fe4f3207c | |
| parent | 1c73b96c21a2484f144648996578e325cc1bc62e (diff) | |
| download | ffmpeg-7ea021e7bf974256e5b215e3a328855db9d41b5f.tar.gz | |
avcodec/apedec: fix a integer overflow in long_filter_high_3800()
Fixes: signed integer overflow: -2146549696 - 3923884 cannot be represented in type 'int'
Fixes: 45907/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APE_fuzzer-5992380584558592
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 b085b400becb93ccc68d786ab738b1fc50408b89)
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 87d704e600..035fa9a434 100644 --- a/libavcodec/apedec.c +++ b/libavcodec/apedec.c @@ -905,7 +905,7 @@ static void long_filter_high_3800(int32_t *buffer, int order, int shift, int len dotprod += delay[j] * (unsigned)coeffs[j]; coeffs[j] += ((delay[j] >> 31) | 1) * sign; } - buffer[i] -= dotprod >> shift; + buffer[i] -= (unsigned)(dotprod >> shift); for (j = 0; j < order - 1; j++) delay[j] = delay[j + 1]; delay[order - 1] = buffer[i]; |