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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>
tags/n2.3
Michael Niedermayer 11 years ago
parent
commit
f9158b01d0
1 changed files with 5 additions and 0 deletions
  1. +5
    -0
      libswresample/resample.c

+ 5
- 0
libswresample/resample.c View File

@@ -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;


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