CWE
476
Advisory Published

USN-2779-1: Linux kernel vulnerabilities

First published: Tue Oct 20 2015(Updated: )

It was discovered that the Linux kernel did not check if a new IPv6 MTU set by a user space application was valid. A remote attacker could forge a route advertisement with an invalid MTU that a user space daemon like NetworkManager would honor and apply to the kernel, causing a denial of service. (CVE-2015-0272) It was discovered that virtio networking in the Linux kernel did not handle fragments correctly, leading to kernel memory corruption. A remote attacker could use this to cause a denial of service (system crash) or possibly execute code with administrative privileges. (CVE-2015-5156) It was discovered that the Reliable Datagram Sockets (RDS) implementation in the Linux kernel did not verify sockets were properly bound before attempting to send a message, which could cause a NULL pointer dereference. An attacker could use this to cause a denial of service (system crash). (CVE-2015-6937) Ben Hutchings discovered that the Advanced Union Filesystem (aufs) for the Linux kernel did not correctly handle references of memory mapped files from an aufs mount. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code with administrative privileges. (CVE-2015-7312)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-3.19.0-31-generic<3.19.0-31.36
3.19.0-31.36
=15.04
All of
ubuntu/linux-image-3.19.0-31-powerpc-e500mc<3.19.0-31.36
3.19.0-31.36
=15.04
All of
ubuntu/linux-image-3.19.0-31-lowlatency<3.19.0-31.36
3.19.0-31.36
=15.04
All of
ubuntu/linux-image-3.19.0-31-powerpc-smp<3.19.0-31.36
3.19.0-31.36
=15.04
All of
ubuntu/linux-image-3.19.0-31-generic-lpae<3.19.0-31.36
3.19.0-31.36
=15.04
All of
ubuntu/linux-image-3.19.0-31-powerpc64-smp<3.19.0-31.36
3.19.0-31.36
=15.04
All of
ubuntu/linux-image-3.19.0-31-powerpc64-emb<3.19.0-31.36
3.19.0-31.36
=15.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-2779-1?

    The severity of USN-2779-1 is high.

  • What is the description of USN-2779-1?

    USN-2779-1 is a vulnerability in the Linux kernel that allows a remote attacker to cause a denial of service.

  • Which version of the Linux kernel is affected by USN-2779-1?

    The Linux kernel version 3.19.0-31.36 is affected by USN-2779-1.

  • How can I fix USN-2779-1?

    To fix USN-2779-1, update to version 3.19.0-31.36 of the Linux kernel.

  • Where can I find more information about USN-2779-1?

    More information about USN-2779-1 can be found at the following links: [CVE-2015-0272](https://ubuntu.com/security/CVE-2015-0272), [CVE-2015-5156](https://ubuntu.com/security/CVE-2015-5156), [CVE-2015-6937](https://ubuntu.com/security/CVE-2015-6937).

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