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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-04-16 22:29:09 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-07-16 19:06:26 +0200 |
| commit | 7784a7c1d8df7364a01436a7c90f483db596be78 (patch) | |
| tree | eb3437eed40fd5cdad40d472dd4a8c752ce09ead | |
| parent | bd6a181d5a4998d0eb54c67845d64b52b9a74dca (diff) | |
| download | ffmpeg-7784a7c1d8df7364a01436a7c90f483db596be78.tar.gz | |
avcodec/dsicinvideo: Fail if there is only a small fraction of the data available that comprises a full frame
Fixes: Timeout
Fixes: 6306/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DSICINVIDEO_fuzzer-5079253549842432
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 5549488bbf3a23c0fb9833cefc6354f97055dd96)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/dsicinvideo.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/libavcodec/dsicinvideo.c b/libavcodec/dsicinvideo.c index add7afa383..aa080417d2 100644 --- a/libavcodec/dsicinvideo.c +++ b/libavcodec/dsicinvideo.c @@ -158,6 +158,9 @@ static int cin_decode_lzss(const unsigned char *src, int src_size, } } + if (dst_end - dst > dst_size - dst_size/10) + return AVERROR_INVALIDDATA; + return 0; } @@ -184,6 +187,10 @@ static int cin_decode_rle(const unsigned char *src, int src_size, } dst += len; } + + if (dst_end - dst > dst_size - dst_size/10) + return AVERROR_INVALIDDATA; + return 0; } |