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CVE-2016-2185 ati_remote2: oops on invalid USB descriptors (rhbz 1317014 1317471)

This commit is contained in:
Josh Boyer 2016-03-18 10:50:37 -04:00
parent 89cc46c010
commit b1afb06566
2 changed files with 43 additions and 0 deletions
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4
kernel.spec
View File

@ -640,6 +640,9 @@ Patch673: USB-input-powermate-fix-oops-with-malicious-USB-desc.patch
#CVE-2016-2188 rhbz 1317018 1317467
Patch674: USB-iowarrior-fix-oops-with-malicious-USB-descriptor.patch
#CVE-2016-2185 rhbz 1317014 1317471
Patch675: usb_driver_claim_interface-add-sanity-checking.patch
# END OF PATCH DEFINITIONS
%endif
@ -2162,6 +2165,7 @@ fi
#
%changelog
* Fri Mar 18 2016 Josh Boyer <jwboyer@fedoraproject.org>
- CVE-2016-2185 ati_remote2: oops on invalid USB descriptors (rhbz 1317014 1317471)
- CVE-2016-2188 iowarrior: oops on invalid USB descriptors (rhbz 1317018 1317467)
- CVE-2016-2186 powermate: oops on invalid USB descriptors (rhbz 1317015 1317464)
- CVE-2016-3137 cypress_m8: oops on invalid USB descriptors (rhbz 1317010 1316996)

39
usb_driver_claim_interface-add-sanity-checking.patch Normal file
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@ -0,0 +1,39 @@
From de0784bdf6314b70c69416d8c576eb83237d5b1e Mon Sep 17 00:00:00 2001
From: Oliver Neukum <oneukum@suse.com>
Date: Wed, 16 Mar 2016 12:26:17 -0400
Subject: [PATCH] usb_driver_claim_interface: add sanity checking
Attacks that trick drivers into passing a NULL pointer
to usb_driver_claim_interface() using forged descriptors are
known. This thwarts them by sanity checking.
Signed-off-by: Oliver Neukum <ONeukum@suse.com>
CC: stable@vger.kernel.org
---
drivers/usb/core/driver.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index 6b5063e7943f..e2d242b68d4b 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -500,11 +500,15 @@ static int usb_unbind_interface(struct device *dev)
int usb_driver_claim_interface(struct usb_driver *driver,
struct usb_interface *iface, void *priv)
{
- struct device *dev = &iface->dev;
+ struct device *dev;
struct usb_device *udev;
int retval = 0;
int lpm_disable_error;
+ if (!iface)
+ return -ENODEV;
+
+ dev = &iface->dev;
if (dev->driver)
return -EBUSY;
--
2.5.0