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avcodec/h264_slice: Clear ref_counts on redundant slices

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Fixes reading freed memory
Fixes: 568/clusterfuzz-testcase-6107186067406848

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit c03029a835949fc0e68b4c6558ebcdc3ae137087)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-02-08 17:55:41 +01:00
parent 02a5e88ebc
commit d20200d303
1 changed files with 2 additions and 1 deletions
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libavcodec/h264.c
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@ -1023,7 +1023,8 @@ again:
#endif
} else
context_count++;
}
} else
sl->ref_count[0] = sl->ref_count[1] = 0;
break;
case NAL_DPA:
case NAL_DPB: