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avcodec/vc1dec: Free sprite_output_frame on error 

Fixes: memleaks
Fixes: 19471/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VC1IMAGE_fuzzer-5688035714269184

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 2019-12-16 23:31:22 +01:00
parent d5e7f01090
commit 3ee9240be3
1 changed files with 9 additions and 2 deletions
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11
libavcodec/vc1dec.c
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@ -576,14 +576,21 @@ static av_cold int vc1_decode_init(AVCodecContext *avctx)
if (v->sprite_width > 1 << 14 ||
v->sprite_height > 1 << 14 ||
v->output_width > 1 << 14 ||
v->output_height > 1 << 14) return -1;
v->output_height > 1 << 14) {
ret = -1;
goto error;
}
if ((v->sprite_width&1) || (v->sprite_height&1)) {
avpriv_request_sample(avctx, "odd sprites support");
return AVERROR_PATCHWELCOME;
ret = AVERROR_PATCHWELCOME;
goto error;
}
}
return 0;
error:
av_frame_free(&v->sprite_output_frame);
return ret;
}
/** Close a VC1/WMV3 decoder