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| author | Michael Niedermayer <michaelni@gmx.at> | 2014-12-16 16:24:55 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2014-12-16 16:27:45 +0100 |
| commit | 3030fb7e0d41836f8add6399e9a7c7b740b48bfd (patch) | |
| tree | 3830fd6211fce6ac3db2af6d0c08eca1100d62d1 /libavcodec/vmdvideo.c | |
| parent | b8eb8b03104abb926616eb48fcb6d00127704bea (diff) | |
avcodec/vmdvideo: Check len before using it in method 3
Fixes out of array access
Fixes: asan_heap-oob_4d23ba_91_cov_3853393937_128.vmd
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/vmdvideo.c')
| -rw-r--r-- | libavcodec/vmdvideo.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/vmdvideo.c b/libavcodec/vmdvideo.c index fa0fbe32d4..a2ba1c959b 100644 --- a/libavcodec/vmdvideo.c +++ b/libavcodec/vmdvideo.c @@ -339,6 +339,9 @@ static int vmd_decode(VmdVideoContext *s, AVFrame *frame) ofs += slen; bytestream2_skip(&gb, len); } else { + if (ofs + len > frame_width || + bytestream2_get_bytes_left(&gb) < len) + return AVERROR_INVALIDDATA; bytestream2_get_buffer(&gb, &dp[ofs], len); ofs += len; } |