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| author | Michael Niedermayer <michael@niedermayer.cc> | 2015-12-02 21:16:27 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2015-12-06 02:51:27 +0100 |
| commit | d295ddffe138de7a17337bc88c39425e13fd073a (patch) | |
| tree | 1beffd89e42d38200bf79f06fd768675a289e1d8 | |
| parent | aab65146afd83240087523636fa761724b0e9670 (diff) | |
| download | ffmpeg-d295ddffe138de7a17337bc88c39425e13fd073a.tar.gz | |
avcodec/apedec: Check length in long_filter_high_3800()
Fixes out of array read
Fixes: 0a7ff0c1d93da9cef28a315ec91b692a/asan_heap-oob_4a52e5_3604_9c56dbb20e308f4faeef7b35f688521a.ape
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit cd7524fdd13dc8d0cf22e2cfd8300a245542b13a)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/apedec.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/apedec.c b/libavcodec/apedec.c index 5536e0f8b1..c6eae55c4e 100644 --- a/libavcodec/apedec.c +++ b/libavcodec/apedec.c @@ -892,6 +892,9 @@ static void long_filter_high_3800(int32_t *buffer, int order, int shift, int len int32_t dotprod, sign; int32_t coeffs[256], delay[256]; + if (order >= length) + return; + memset(coeffs, 0, order * sizeof(*coeffs)); for (i = 0; i < order; i++) delay[i] = buffer[i]; |