USN-2620-1: Linux kernel vulnerability
Ubuntu Security Notice USN-2620-1
23rd May, 2015
linux vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.04 LTS
Summary
The system could be made to crash under certain conditions.
Software description
- linux - Linux kernel
Details
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).
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 14.04 LTS:
- linux-image-3.13.0-53-generic-lpae 3.13.0-53.89
- linux-image-3.13.0-53-powerpc64-emb 3.13.0-53.89
- linux-image-3.13.0-53-powerpc-smp 3.13.0-53.89
- linux-image-3.13.0-53-lowlatency 3.13.0-53.89
- linux-image-3.13.0-53-powerpc-e500 3.13.0-53.89
- linux-image-3.13.0-53-generic 3.13.0-53.89
- linux-image-3.13.0-53-powerpc-e500mc 3.13.0-53.89
- linux-image-3.13.0-53-powerpc64-smp 3.13.0-53.89
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.