USN-4905-2: X.Org X Server vulnerability
Publication date
30 June 2021
Overview
X.Org X Server could be made to crash or run programs if it received specially crafted input.
Releases
Packages
- xorg-server - X.Org X11 server
Details
USN-4905-1 fixed a vulnerability in X.Org. This update provides
the corresponding update for Ubuntu 14.04 ESM.
Original advisory details:
Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled
certain lengths of XInput extension ChangeFeedbackControl requests. An
attacker could use this issue to cause the server to crash, resulting in a
denial of service, or possibly execute arbitrary code.
USN-4905-1 fixed a vulnerability in X.Org. This update provides
the corresponding update for Ubuntu 14.04 ESM.
Original advisory details:
Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled
certain lengths of XInput extension ChangeFeedbackControl requests. An
attacker could use this issue to cause the server to crash, resulting in a
denial of service, or possibly execute arbitrary code.
Update instructions
After a standard system update you need to reboot your computer to make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 14.04 trusty | xserver-xorg-core – 2:1.15.1-0ubuntu2.11+esm4 | ||
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