USN-2620-1: Linux kernel vulnerability

Releases

• Ubuntu 14.04 ESM

Packages

• 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 versions:

Ubuntu 14.04

• linux-image-3.13.0-53-generic - 3.13.0-53.89
• linux-image-3.13.0-53-generic-lpae - 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-powerpc-e500mc - 3.13.0-53.89
• linux-image-3.13.0-53-powerpc-smp - 3.13.0-53.89
• linux-image-3.13.0-53-powerpc64-emb - 3.13.0-53.89
• linux-image-3.13.0-53-powerpc64-smp - 3.13.0-53.89

After a standard system update you need to reboot your computer to make
all the necessary changes.

References

• CVE-2015-3332

Related notices

• USN-2616-1
• USN-2619-1
• USN-2615-1