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avcodec/msrle: Check that the input is large enough to contain a end of picture code

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Fixes: Timeout
Fixes: 10625/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MSRLE_fuzzer-5659651283091456

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 203ccb8746)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2018-10-21 14:40:14 +02:00
parent 98444e0222
commit 2405af5081
1 changed files with 3 additions and 0 deletions
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libavcodec/msrle.c
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@ -95,6 +95,9 @@ static int msrle_decode_frame(AVCodecContext *avctx,
s->buf = buf;
s->size = buf_size;
if (buf_size < 2) //Minimally a end of picture code should be there
return AVERROR_INVALIDDATA;
if ((ret = ff_reget_buffer(avctx, s->frame)) < 0)
return ret;