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avcodec/utils: Check close before calling it 

Fixes: NULL pointer dereference
Fixes: 15733/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_IDF_fuzzer-5658616977162240

Reviewed-by: Paul B Mahol <onemda@gmail.com>
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 2019-07-21 00:08:55 +02:00
parent 508ce5839e
commit 8df6884832
1 changed files with 1 additions and 1 deletions
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2
libavcodec/utils.c
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@ -1024,7 +1024,7 @@ end:
return ret;
free_and_end:
if (avctx->codec &&
if (avctx->codec && avctx->codec->close &&
(codec_init_ok ||
(avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP)))
avctx->codec->close(avctx);