Subject: + agp-info-leak-in-agpioc_info_wrap.patch added to -mm tree
To: dan.carpenter@xxxxxxxxxx,airlied@xxxxxxxx,daniel.vetter@xxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Mon, 05 May 2014 14:01:38 -0700
The patch titled
Subject: agp: info leak in agpioc_info_wrap()
has been added to the -mm tree. Its filename is
agp-info-leak-in-agpioc_info_wrap.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/agp-info-leak-in-agpioc_info_wrap.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/agp-info-leak-in-agpioc_info_wrap.patch
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------------------------------------------------------
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Subject: agp: info leak in agpioc_info_wrap()
On 64 bit systems the agp_info struct has a 4 byte hole between ->agp_mode
and ->aper_base. We need to clear it to avoid disclosing stack
information to userspace.
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Cc: David Airlie <airlied@xxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/char/agp/frontend.c | 1 +
1 file changed, 1 insertion(+)
diff -puN drivers/char/agp/frontend.c~agp-info-leak-in-agpioc_info_wrap drivers/char/agp/frontend.c
--- a/drivers/char/agp/frontend.c~agp-info-leak-in-agpioc_info_wrap
+++ a/drivers/char/agp/frontend.c
@@ -730,6 +730,7 @@ static int agpioc_info_wrap(struct agp_f
agp_copy_info(agp_bridge, &kerninfo);
+ memset(&userinfo, 0, sizeof(userinfo));
userinfo.version.major = kerninfo.version.major;
userinfo.version.minor = kerninfo.version.minor;
userinfo.bridge_id = kerninfo.device->vendor |
_
Patches currently in -mm which might be from dan.carpenter@xxxxxxxxxx are
agp-info-leak-in-agpioc_info_wrap.patch
lib-stringc-use-the-name-c-string-in-comments.patch
linux-next.patch
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