1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking.org

X.Org Servers Updated To Fix Security Flaw

Red Hat

Published on 17 April 2013 05:47 AM EDT
Written by Michael Larabel in Red Hat
1 Comment

Peter Hutterer has issued unscheduled updates to the X.Org Server 1.13 and 1.14 release series to address a new input security vulnerability on Linux.

Coming about last week was CVE-2013-1940. Red Hat employees discovered, "An information disclosure flaw was found in the way X.org X11 server...used to register new hot-plug devices, when X.org X11 server was instructed (for that particular moment) not to receive input devices events. Formerly when registering new input device, X.org X11 server simultaneously enabled retrieval of input from the particular device (regardless of the setting). A local unsuspecting user, relying on the X.org X11 server disable input feature it to properly prohibit acquiring of events from this newly added hot-plug device, could supply a sensitive information that, due the above bug, would become available to the physically proximate attackers."

X.Org input expert and Red Hat employee Peter Hutterer ended up fixing the security problem yesterday with this patch. "So when we VT switch back and attempt to flush the input devices, we don't succeed because evdev won't return part of an event, since we were only asking for 4 bytes, we'd only get -EINVAL back. This could later cause events to be flushed that we shouldn't have gotten. This is a fix for CVE-2013-1940."

This issue affects all hotplugging-enabled X.Org Servers relying upon evdev for input devices. After committing the security fix, Hutterer released X.Org Server 1.13.4 and X.Org Server 1.14.1.

Fortunately, Peter characterizes this security issue as "lminor" within a blog post. There's more details on the issue as well in a Google+ post by David Airlie.

There's also a couple of other changes that were built up into each of these releases for the two latest xorg-server series, but nothing particularly exciting.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
Latest Linux Hardware Reviews
  1. ASRock X99 Extreme3 Is An Affordable Choice For Linux Users
  2. A Walkthrough Of The New 32 System Open-Source Linux Benchmarking Test Farm
  3. Habey MITX-6771: Mini-ITX Board With Quad-Core J1900 Bay Trail
  4. OCZ Vector 150 SSD On Linux
Latest Linux Articles
  1. 17-Way Linux Graphics Card Comparison With Civilization Beyond Earth
  2. AMD Kaveri: Open-Source Radeon Gallium3D vs. Catalyst 14.12 Omega Driver
  3. 12-Way AMD Catalyst 14.12 vs. NVIDIA 346 Series Linux GPU Comparison
  4. AMD Catalyst 14.12 Omega Driver Brings Mixed Results For Linux Users
Latest Linux News
  1. Features Of The Linux 3.19 Kernel: Graphics & Disks Rule
  2. Orange Pi Is The Latest Raspberry Pi Inspired ARM Board
  3. An Open-Source Hardware Ambient Light Sensor Is Brought Up
  4. Heterogeneous Memory Management Is Coming Along For The Linux Kernel
  5. NTP Is The Latest Project Struck By Security Issues
  6. LDC 0.15.1 Released For A D Compiler In LLVM
  7. Fedora Doesn't Yet Enable F2FS File-System Support
  8. XZ 5.2 Adds New Multi-Threaded Options
  9. Intel 2.99.917 X.Org Driver Released, 3.0 Release Finally Near
  10. Server-Side XCB Is Being Discussed For The X.Org Server
Latest Forum Discussions
  1. No OpenCL with latest driver updates on Ubuntu?
  2. Looking for an nVidia GPU, but not sure how well they are supported.
  3. Need some hand holding with upgrading xserver
  4. Maker3D - create your 3D RPG
  5. FPS capped on Linux (AMD fglrx drivers)
  6. Speeding up systemd networking service
  7. Major Performance Breakthrough Discovered For Intel's Mesa Driver
  8. Are there an app using HSA ?