Subject: + block-compat_ioctlc-do-not-leak-info-to-user-space.patch added to -mm tree
To: amwang@xxxxxxxxxx,axboe@xxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Wed, 22 May 2013 14:07:38 -0700
The patch titled
Subject: block/compat_ioctl.c: do not leak info to user-space
has been added to the -mm tree. Its filename is
block-compat_ioctlc-do-not-leak-info-to-user-space.patch
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------------------------------------------------------
From: Cong Wang <amwang@xxxxxxxxxx>
Subject: block/compat_ioctl.c: do not leak info to user-space
There is a hole in struct hd_geometry, so we have to zero the struct on
stack before copying it to user-space.
Signed-off-by: Cong Wang <amwang@xxxxxxxxxx>
Cc: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
block/compat_ioctl.c | 1 +
1 file changed, 1 insertion(+)
diff -puN block/compat_ioctl.c~block-compat_ioctlc-do-not-leak-info-to-user-space block/compat_ioctl.c
--- a/block/compat_ioctl.c~block-compat_ioctlc-do-not-leak-info-to-user-space
+++ a/block/compat_ioctl.c
@@ -59,6 +59,7 @@ static int compat_hdio_getgeo(struct gen
if (!disk->fops->getgeo)
return -ENOTTY;
+ memset(&geo, 0, sizeof(geo));
/*
* We need to set the startsect first, the driver may
* want to override it.
_
Patches currently in -mm which might be from amwang@xxxxxxxxxx are
linux-next.patch
block-compat_ioctlc-do-not-leak-info-to-user-space.patch
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