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author | Michael Niedermayer <michaelni@gmx.at> | 2014-10-03 21:08:52 +0200 |
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committer | Michael Niedermayer <michaelni@gmx.at> | 2014-10-04 23:52:29 +0200 |
commit | b89f279cd6244b207ad9142ec4f8c757a909b77c (patch) | |
tree | 799893f272d859b362f1021164198f6030db3a14 | |
parent | 7f90eef87ac84c617b102b689eb68e7cb140167b (diff) | |
download | ffmpeg-b89f279cd6244b207ad9142ec4f8c757a909b77c.tar.gz |
avcodec/qpeg: fix off by 1 error in MV bounds check
Fixes out of array access
Fixes: asan_heap-oob_153760f_4_asan_heap-oob_1d7a4cf_164_VWbig6.avi
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit dd3bfe3cc1ca26d0fff3a3baf61a40207032143f)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
-rw-r--r-- | libavcodec/qpeg.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/qpeg.c b/libavcodec/qpeg.c index 94cb5bd0b6..d61bceafd7 100644 --- a/libavcodec/qpeg.c +++ b/libavcodec/qpeg.c @@ -163,7 +163,7 @@ static void av_noinline qpeg_decode_inter(QpegContext *qctx, uint8_t *dst, /* check motion vector */ if ((me_x + filled < 0) || (me_x + me_w + filled > width) || - (height - me_y - me_h < 0) || (height - me_y > orig_height) || + (height - me_y - me_h < 0) || (height - me_y >= orig_height) || (filled + me_w > width) || (height - me_h < 0)) av_log(NULL, AV_LOG_ERROR, "Bogus motion vector (%i,%i), block size %ix%i at %i,%i\n", me_x, me_y, me_w, me_h, filled, height); |