This is a note to let you know that I've just added the patch titled
usb: core: fix information leak to userland
to the 2.6.36-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-core-fix-information-leak-to-userland.patch
and it can be found in the queue-2.6.36 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 886ccd4520064408ce5876cfe00554ce52ecf4a7 Mon Sep 17 00:00:00 2001
From: Vasiliy Kulikov <[email protected]>
Date: Sat, 6 Nov 2010 17:41:28 +0300
Subject: usb: core: fix information leak to userland
From: Vasiliy Kulikov <[email protected]>
commit 886ccd4520064408ce5876cfe00554ce52ecf4a7 upstream.
Structure usbdevfs_connectinfo is copied to userland with padding byted
after "slow" field uninitialized. It leads to leaking of contents of
kernel stack memory.
Signed-off-by: Vasiliy Kulikov <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/usb/core/devio.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -965,10 +965,11 @@ static int proc_getdriver(struct dev_sta
static int proc_connectinfo(struct dev_state *ps, void __user *arg)
{
- struct usbdevfs_connectinfo ci;
+ struct usbdevfs_connectinfo ci = {
+ .devnum = ps->dev->devnum,
+ .slow = ps->dev->speed == USB_SPEED_LOW
+ };
- ci.devnum = ps->dev->devnum;
- ci.slow = ps->dev->speed == USB_SPEED_LOW;
if (copy_to_user(arg, &ci, sizeof(ci)))
return -EFAULT;
return 0;
Patches currently in stable-queue which might be from [email protected] are
queue-2.6.36/kvm-x86-fix-information-leak-to-userland.patch
queue-2.6.36/usb-misc-sisusbvga-fix-information-leak-to-userland.patch
queue-2.6.36/usb-misc-iowarrior-fix-information-leak-to-userland.patch
queue-2.6.36/ipc-shm-fix-information-leak-to-userland.patch
queue-2.6.36/usb-core-fix-information-leak-to-userland.patch
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