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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-02-22 00:42:23 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-02-22 02:42:48 +0100 |
| commit | 24f6559bd2417b30c848d27523c88949d537a83c (patch) | |
| tree | c3c256ecbf514ac11ac4f5e5859a83d248203e74 /libavcodec/rv34.c | |
| parent | 1ad60e4e70ecc71b1301bdc041fa133129338393 (diff) | |
avcodec/rv34: Fix runtime error: signed integer overflow: -2 + -2147483648 cannot be represented in type 'int'
Fixes: 642/clusterfuzz-testcase-558358808074649
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/rv34.c')
| -rw-r--r-- | libavcodec/rv34.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavcodec/rv34.c b/libavcodec/rv34.c index aca8382f20..f1c93cffa4 100644 --- a/libavcodec/rv34.c +++ b/libavcodec/rv34.c @@ -866,6 +866,11 @@ static int rv34_decode_mv(RV34DecContext *r, int block_type) for(i = 0; i < num_mvs[block_type]; i++){ r->dmv[i][0] = get_interleaved_se_golomb(gb); r->dmv[i][1] = get_interleaved_se_golomb(gb); + if (r->dmv[i][0] == INVALID_VLC || + r->dmv[i][1] == INVALID_VLC) { + r->dmv[i][0] = r->dmv[i][1] = 0; + return AVERROR_INVALIDDATA; + } } switch(block_type){ case RV34_MB_TYPE_INTRA: |