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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-09-22 20:45:27 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-09-25 11:10:29 +0200 |
| commit | 27505de3b9fe75a749a6c3c91f66fe1bc404e51c (patch) | |
| tree | 93adce1e4517cd0483c41a81365e6da2b06031ef | |
| parent | dc5240a4d797cb8c89112e248cfcab92e749a0c0 (diff) | |
| download | ffmpeg-27505de3b9fe75a749a6c3c91f66fe1bc404e51c.tar.gz | |
avcodec/takdec: Fix integer overflow in decode_lpc()
Fixes: runtime error: signed integer overflow: 16748560 + 2143729712 cannot be represented in type 'int'
Fixes: 3202/clusterfuzz-testcase-minimized-4988291642294272
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 5d31f03a0264cac24434c8108daef4ccba6d28f9)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/takdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/takdec.c b/libavcodec/takdec.c index 76814b4511..b422dd1b07 100644 --- a/libavcodec/takdec.c +++ b/libavcodec/takdec.c @@ -204,7 +204,7 @@ static void decode_lpc(int32_t *coeffs, int mode, int length) int a1 = *coeffs++; for (i = 0; i < length - 1 >> 1; i++) { *coeffs += a1; - coeffs[1] += *coeffs; + coeffs[1] += (unsigned)*coeffs; a1 = coeffs[1]; coeffs += 2; } |