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| author | Michael Niedermayer <michaelni@gmx.at> | 2014-04-08 00:19:07 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2014-04-10 04:53:00 +0200 |
| commit | 352b0969e23c83074cb8bfb4fb268df45848a983 (patch) | |
| tree | db13a855b4d8b7c227b80b573fa9cc1efad3eddb | |
| parent | b479b42b26b9c84b596eec1c9cf46e5221752fea (diff) | |
| download | ffmpeg-352b0969e23c83074cb8bfb4fb268df45848a983.tar.gz | |
swresample/resample: Limit filter length
Related to CID1197063
The limit choosen is arbitrary and much larger than what makes sense.
It avoids the need for checking arithmetic operations with the length for overflow
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit f9158b01d0f3effb58e87fb07db0382bc1e47de5)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libswresample/resample.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libswresample/resample.c b/libswresample/resample.c index 8b1b6ca9af..b968447444 100644 --- a/libswresample/resample.c +++ b/libswresample/resample.c @@ -229,6 +229,11 @@ static ResampleContext *resample_init(ResampleContext *c, int out_rate, int in_r av_assert0(0); } + if (filter_size/factor > INT32_MAX/256) { + av_log(NULL, AV_LOG_ERROR, "Filter length too large\n"); + goto error; + } + c->phase_shift = phase_shift; c->phase_mask = phase_count - 1; c->linear = linear; |