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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-02-18 17:12:28 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-02-20 15:27:51 +0100 |
| commit | 85c85fffff3f9c75301db3eba1bd5f2fb1e6285d (patch) | |
| tree | 51bcbecfc780b0edd37c69cf704d5bd088466417 | |
| parent | 33fe17bdc88d51a8e0c87aa1e8011aaaf38a7a90 (diff) | |
avcodec/h264_parse: Clear invalid chroma weights in ff_h264_pred_weight_table()
Fixes: 6037/clusterfuzz-testcase-minimized-5030249784934400
Fixes: signed integer overflow: 256 * 16992036 cannot be represented in type 'int'
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/h264_parse.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libavcodec/h264_parse.c b/libavcodec/h264_parse.c index 6cbef5a13d..87e5b3cdc5 100644 --- a/libavcodec/h264_parse.c +++ b/libavcodec/h264_parse.c @@ -82,8 +82,11 @@ int ff_h264_pred_weight_table(GetBitContext *gb, const SPS *sps, pwt->chroma_weight[i][list][j][0] = get_se_golomb(gb); pwt->chroma_weight[i][list][j][1] = get_se_golomb(gb); if ((int8_t)pwt->chroma_weight[i][list][j][0] != pwt->chroma_weight[i][list][j][0] || - (int8_t)pwt->chroma_weight[i][list][j][1] != pwt->chroma_weight[i][list][j][1]) + (int8_t)pwt->chroma_weight[i][list][j][1] != pwt->chroma_weight[i][list][j][1]) { + pwt->chroma_weight[i][list][j][0] = chroma_def; + pwt->chroma_weight[i][list][j][1] = 0; goto out_range_weight; + } if (pwt->chroma_weight[i][list][j][0] != chroma_def || pwt->chroma_weight[i][list][j][1] != 0) { pwt->use_weight_chroma = 1; |