diff options
| author | Michael Niedermayer <michaelni@gmx.at> | 2015-02-25 14:29:10 +0300 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2015-06-10 03:13:09 +0300 |
| commit | 22dc1fd166eb403d6e1d1b6b8c602922f37520a0 (patch) | |
| tree | 56c27041e9e20887e79bc8c8e2b133eb71b02807 | |
| parent | bc0bf39e4ccfb0a85ddb2b072d42bad2a8e8b1be (diff) | |
avcodec/zmbv: Check len before reading in decode_frame()
Fixes out of array read
Fixes: asan_heap-oob_4d4eb0_3994_cov_3169972261_zmbv_15bit.avi
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 1f5c7781e63d6519192ada59c1e36bcecc92791d)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavcodec/zmbv.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavcodec/zmbv.c b/libavcodec/zmbv.c index 7f3b326dd1..fde8539a58 100644 --- a/libavcodec/zmbv.c +++ b/libavcodec/zmbv.c @@ -409,11 +409,16 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPac int hi_ver, lo_ver, ret; /* parse header */ + if (len < 1) + return AVERROR_INVALIDDATA; c->flags = buf[0]; buf++; len--; if (c->flags & ZMBV_KEYFRAME) { void *decode_intra = NULL; c->decode_intra= NULL; + + if (len < 6) + return AVERROR_INVALIDDATA; hi_ver = buf[0]; lo_ver = buf[1]; c->comp = buf[2]; |