Advisory Published

USN-1650-1: Linux kernel vulnerability

First published: Fri Nov 30 2012(Updated: )

Rodrigo Freire discovered a flaw in the Linux kernel's TCP illinois congestion control algorithm. A local attacker could use this to cause a denial of service.

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-2.6.24-32-itanium<2.6.24-32.106
2.6.24-32.106
Ubuntu 22.04 LTS=8.04
All of
ubuntu/linux-image-2.6.24-32-powerpc<2.6.24-32.106
2.6.24-32.106
Ubuntu 22.04 LTS=8.04
All of
ubuntu/linux-image-2.6.24-32-powerpc64-smp<2.6.24-32.106
2.6.24-32.106
Ubuntu 22.04 LTS=8.04
All of
ubuntu/linux-image-2.6.24-32-sparc64<2.6.24-32.106
2.6.24-32.106
Ubuntu 22.04 LTS=8.04
All of
ubuntu/linux-image-2.6.24-32-server<2.6.24-32.106
2.6.24-32.106
Ubuntu 22.04 LTS=8.04
All of
ubuntu/linux-image-2.6.24-32-openvz<2.6.24-32.106
2.6.24-32.106
Ubuntu 22.04 LTS=8.04
All of
ubuntu/linux-image-2.6.24-32-386<2.6.24-32.106
2.6.24-32.106
Ubuntu 22.04 LTS=8.04
All of
ubuntu/linux-image-2.6.24-32-hppa32<2.6.24-32.106
2.6.24-32.106
Ubuntu 22.04 LTS=8.04
All of
ubuntu/linux-image-2.6.24-32-lpiacompat<2.6.24-32.106
2.6.24-32.106
Ubuntu 22.04 LTS=8.04
All of
ubuntu/linux-image-2.6.24-32-mckinley<2.6.24-32.106
2.6.24-32.106
Ubuntu 22.04 LTS=8.04
All of
ubuntu/linux-image-2.6.24-32-lpia<2.6.24-32.106
2.6.24-32.106
Ubuntu 22.04 LTS=8.04
All of
ubuntu/linux-image-2.6.24-32-xen<2.6.24-32.106
2.6.24-32.106
Ubuntu 22.04 LTS=8.04
All of
ubuntu/linux-image-2.6.24-32-hppa64<2.6.24-32.106
2.6.24-32.106
Ubuntu 22.04 LTS=8.04
All of
ubuntu/linux-image-2.6.24-32-powerpc-smp<2.6.24-32.106
2.6.24-32.106
Ubuntu 22.04 LTS=8.04
All of
ubuntu/linux-image-2.6.24-32-generic<2.6.24-32.106
2.6.24-32.106
Ubuntu 22.04 LTS=8.04
All of
ubuntu/linux-image-2.6.24-32-rt<2.6.24-32.106
2.6.24-32.106
Ubuntu 22.04 LTS=8.04
All of
ubuntu/linux-image-2.6.24-32-virtual<2.6.24-32.106
2.6.24-32.106
Ubuntu 22.04 LTS=8.04
All of
ubuntu/linux-image-2.6.24-32-sparc64-smp<2.6.24-32.106
2.6.24-32.106
Ubuntu 22.04 LTS=8.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-1650-1?

    The severity of USN-1650-1 is classified as high due to the potential for denial of service by a local attacker.

  • How do I fix USN-1650-1?

    To fix USN-1650-1, users should upgrade to the latest kernel version 2.6.24-32.106 or later.

  • Which systems are affected by USN-1650-1?

    USN-1650-1 affects Ubuntu 8.04 systems running specific kernel packages including linux-image-2.6.24-32-server and linux-image-2.6.24-32-generic.

  • What is the cause of the vulnerability in USN-1650-1?

    USN-1650-1 is caused by a flaw in the Linux kernel's TCP Illinois congestion control algorithm.

  • Can USN-1650-1 be exploited remotely?

    No, USN-1650-1 can only be exploited by a local attacker, not remotely.

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