The system could be made to crash under certain conditions.
A flaw was discovered in the Linux kernel’s IPv4 networking when using TCP fast open to initiate a connection. An unprivileged local user could exploit this flaw to cause a denial of service (system crash).
23 May 2015
A security issue affects these releases of Ubuntu and its derivatives:
The system could be made to crash under certain conditions.
A flaw was discovered in the Linux kernel’s IPv4 networking when using TCP fast open to initiate a connection. An unprivileged local user could exploit this flaw to cause a denial of service (system crash).
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to reboot your computer to make all the necessary changes.