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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 c03029a835)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer
2017-02-08 17:55:41 +01:00
parent 4adc99ecb6
commit 912cb27f73
1 changed files with 3 additions and 1 deletions
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4
libavcodec/h264.c
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@@ -1587,7 +1587,9 @@ again:
#endif #endif
} else } else
context_count++; context_count++;
} } else
sl->ref_count[0] = sl->ref_count[1] = 0;
break;
break; break;
case NAL_DPA: case NAL_DPA:
case NAL_DPB: case NAL_DPB: