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avcodec/ralf: Fix overflows of biased values 

Fixes: signed integer overflow: 2003010644 * 2 cannot be represented in type 'int'
Fixes: 19593/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RALF_fuzzer-5660628006207488

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2019-12-27 00:11:59 +01:00
parent 32522b5307
commit a71794e8c2
1 changed files with 1 additions and 1 deletions
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libavcodec/ralf.c
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@ -60,7 +60,7 @@ typedef struct RALFContext {
int filter_bits; ///< filter precision for the current channel data
int32_t filter[64];
int bias[2]; ///< a constant value added to channel data after filtering
unsigned bias[2]; ///< a constant value added to channel data after filtering
int num_blocks; ///< number of blocks inside the frame
int sample_offset;