Michael Niedermayer 182d7a7427 avcodec/h264_slice: fix undefined integer overflow with POC in error concealment ...

Alternatively the POC could be changed to 64bit. the large values seem to be within what is allowed.

Fixes: signed integer overflow: 2147483646 + 2 cannot be represented in type 'int'
Fixes: 26076/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_H264_fuzzer-5711127201447936

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

2020-10-18 21:27:23 +02:00

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