[FFmpeg-cvslog] swscale/swscale_unscaled: Fix odd height inputs for bayer_to_rgb24_wrapper ()
Michael Niedermayer
git at videolan.org
Sun Jan 31 00:43:12 CET 2016
ffmpeg | branch: release/2.7 | Michael Niedermayer <michael at niedermayer.cc> | Sun Jan 17 00:55:44 2016 +0100| [d3cefc271daa9b5829b14469b63fac8359241c3d] | committer: Michael Niedermayer
swscale/swscale_unscaled: Fix odd height inputs for bayer_to_rgb24_wrapper()
Fixes: 372d2df1f04b49e25f109f07f90b1505/asan_heap-oob_2835d2e_8501_99e0114d7ba3a6db885d0b4684d200c1.cine
Fixes out of array read
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit ad3b6fa7d83db7de951ed891649af93a47e74be5)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=d3cefc271daa9b5829b14469b63fac8359241c3d
---
libswscale/swscale_unscaled.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/libswscale/swscale_unscaled.c b/libswscale/swscale_unscaled.c
index 1dc42c8..56e3933 100644
--- a/libswscale/swscale_unscaled.c
+++ b/libswscale/swscale_unscaled.c
@@ -1059,6 +1059,8 @@ static int bayer_to_rgb24_wrapper(SwsContext *c, const uint8_t* src[], int srcSt
default: return 0;
}
+ av_assert0(srcSliceH > 1);
+
copy(srcPtr, srcStride[0], dstPtr, dstStride[0], c->srcW);
srcPtr += 2 * srcStride[0];
dstPtr += 2 * dstStride[0];
@@ -1069,7 +1071,10 @@ static int bayer_to_rgb24_wrapper(SwsContext *c, const uint8_t* src[], int srcSt
dstPtr += 2 * dstStride[0];
}
- copy(srcPtr, srcStride[0], dstPtr, dstStride[0], c->srcW);
+ if (i + 1 == srcSliceH) {
+ copy(srcPtr, -srcStride[0], dstPtr, -dstStride[0], c->srcW);
+ } else if (i < srcSliceH)
+ copy(srcPtr, srcStride[0], dstPtr, dstStride[0], c->srcW);
return srcSliceH;
}
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