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avcodec/h264_slice: Fix signed integer overflow

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Fixes: runtime error: signed integer overflow: 26 + 2147483644 cannot be represented in type 'int'
Fixes: 2456/clusterfuzz-testcase-minimized-4822695051001856

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
2017-07-05 00:05:11 +02:00
parent 95f3c85976
commit 7592d97f10
1 changed files with 1 additions and 1 deletions
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libavcodec/h264_slice.c
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@@ -1825,7 +1825,7 @@ static int h264_slice_header_parse(const H264Context *h, H264SliceContext *sl,
} }
sl->last_qscale_diff = 0; sl->last_qscale_diff = 0;
tmp = pps->init_qp + get_se_golomb(&sl->gb); tmp = pps->init_qp + (unsigned)get_se_golomb(&sl->gb);
if (tmp > 51 + 6 * (sps->bit_depth_luma - 8)) { if (tmp > 51 + 6 * (sps->bit_depth_luma - 8)) {
av_log(h->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp); av_log(h->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
return AVERROR_INVALIDDATA; return AVERROR_INVALIDDATA;