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avcodec/utils: Check close before calling it

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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>
(cherry picked from commit 8df6884832ec413cf032dfaa45c23b1c7876670c)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2019-07-21 00:08:55 +02:00
parent fb7e46cbbe
commit 7200fd5121
1 changed files with 1 additions and 1 deletions
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2
libavcodec/utils.c
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@ -1013,7 +1013,7 @@ end:
return ret; return ret;
free_and_end: free_and_end:
if (avctx->codec && if (avctx->codec && avctx->codec->close &&
(codec_init_ok || (codec_init_ok ||
(avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP))) (avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP)))
avctx->codec->close(avctx); avctx->codec->close(avctx);