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avcodec/h264_ps: Fix runtime error: signed integer overflow: 2147483647 + 26 cannot be represented in type 'int' 

Fixes: 902/clusterfuzz-testcase-4561155144024064

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Reviewed-by: "Ronald S. Bultje" <rsbultje@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-03-22 00:17:05 +01:00
parent 0f34c0789f
commit 4f727fbc73
1 changed files with 2 additions and 2 deletions
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4
libavcodec/h264_ps.c
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@ -800,8 +800,8 @@ int ff_h264_decode_picture_parameter_set(GetBitContext *gb, AVCodecContext *avct
pps->weighted_pred = get_bits1(gb); pps->weighted_pred = get_bits1(gb);
pps->weighted_bipred_idc = get_bits(gb, 2); pps->weighted_bipred_idc = get_bits(gb, 2);
pps->init_qp = get_se_golomb(gb) + 26 + qp_bd_offset; pps->init_qp = get_se_golomb(gb) + 26U + qp_bd_offset;
pps->init_qs = get_se_golomb(gb) + 26 + qp_bd_offset; pps->init_qs = get_se_golomb(gb) + 26U + qp_bd_offset;
pps->chroma_qp_index_offset[0] = get_se_golomb(gb); pps->chroma_qp_index_offset[0] = get_se_golomb(gb);
if (pps->chroma_qp_index_offset[0] < -12 || pps->chroma_qp_index_offset[0] > 12) { if (pps->chroma_qp_index_offset[0] < -12 || pps->chroma_qp_index_offset[0] > 12) {
ret = AVERROR_INVALIDDATA; ret = AVERROR_INVALIDDATA;