Advisory Published

USN-2590-1: Linux kernel vulnerabilities

First published: Thu Apr 30 2015(Updated: )

Jan Beulich discovered the Xen virtual machine subsystem of the Linux kernel did not properly restrict access to PCI command registers. A local guest user could exploit this flaw to cause a denial of service (host crash). (CVE-2015-2150) A stack overflow was discovered in the the microcode loader for the intel x86 platform. A local attacker could exploit this flaw to cause a denial of service (kernel crash) or to potentially execute code with kernel privileges. (CVE-2015-2666) A privilege escalation was discovered in the fork syscal vi the int80 entry on 64 bit kernels with 32 bit emulation support. An unprivileged local attacker could exploit this flaw to increase their privileges on the system. (CVE-2015-2830) It was discovered that the Linux kernel's IPv6 networking stack has a flaw that allows using route advertisement (RA) messages to set the 'hop_limit' to values that are too low. An unprivileged attacker on a local network could exploit this flaw to cause a denial of service (IPv6 messages dropped). (CVE-2015-2922)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-3.16.0-36-generic-lpae<3.16.0-36.48
3.16.0-36.48
Ubuntu gir1.2-packagekitglib-1.0=14.10
All of
ubuntu/linux-image-3.16.0-36-powerpc64-smp<3.16.0-36.48
3.16.0-36.48
Ubuntu gir1.2-packagekitglib-1.0=14.10
All of
ubuntu/linux-image-3.16.0-36-powerpc64-emb<3.16.0-36.48
3.16.0-36.48
Ubuntu gir1.2-packagekitglib-1.0=14.10
All of
ubuntu/linux-image-3.16.0-36-generic<3.16.0-36.48
3.16.0-36.48
Ubuntu gir1.2-packagekitglib-1.0=14.10
All of
ubuntu/linux-image-3.16.0-36-lowlatency<3.16.0-36.48
3.16.0-36.48
Ubuntu gir1.2-packagekitglib-1.0=14.10
All of
ubuntu/linux-image-3.16.0-36-powerpc-smp<3.16.0-36.48
3.16.0-36.48
Ubuntu gir1.2-packagekitglib-1.0=14.10
All of
ubuntu/linux-image-3.16.0-36-powerpc-e500mc<3.16.0-36.48
3.16.0-36.48
Ubuntu gir1.2-packagekitglib-1.0=14.10

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Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-2590-1?

    The severity of USN-2590-1 is classified as high due to the potential for a local guest user to cause a denial of service.

  • How do I fix USN-2590-1?

    To fix USN-2590-1, you should upgrade your kernel package to version 3.16.0-36.48 or later.

  • Which Ubuntu versions are affected by USN-2590-1?

    USN-2590-1 affects Ubuntu 14.10 with kernel versions before 3.16.0-36.48.

  • What vulnerabilities are addressed by USN-2590-1?

    USN-2590-1 addresses vulnerabilities related to improper access restrictions in the Xen virtual machine subsystem and stack overflow issues.

  • Can a remote user exploit USN-2590-1?

    No, only a local guest user can exploit USN-2590-1 to cause a denial of service.

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