CWE
362
Advisory Published

USN-2396-1: Linux kernel vulnerabilities

First published: Fri Oct 31 2014(Updated: )

Nadav Amit reported that the KVM (Kernel Virtual Machine) mishandles noncanonical addresses when emulating instructions that change the rip (Instruction Pointer). A guest user with access to I/O or the MMIO can use this flaw to cause a denial of service (system crash) of the guest. (CVE-2014-3647) A flaw was discovered with the handling of the invept instruction in the KVM (Kernel Virtual Machine) subsystem of the Linux kernel. An unprivileged guest user could exploit this flaw to cause a denial of service (system crash) on the guest. (CVE-2014-3646) Lars Bull reported a race condition in the PIT (programmable interrupt timer) emulation in the KVM (Kernel Virtual Machine) subsystem of the Linux kernel. A local guest user with access to PIT i/o ports could exploit this flaw to cause a denial of service (crash) on the host. (CVE-2014-3611) Lars Bull and Nadav Amit reported a flaw in how KVM (the Kernel Virtual Machine) handles noncanonical writes to certain MSR registers. A privileged guest user can exploit this flaw to cause a denial of service (kernel panic) on the host. (CVE-2014-3610)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-3.16.0-24-powerpc-e500mc<3.16.0-24.32
3.16.0-24.32
Ubuntu 22.04 LTS=14.10
All of
ubuntu/linux-image-3.16.0-24-powerpc64-smp<3.16.0-24.32
3.16.0-24.32
Ubuntu 22.04 LTS=14.10
All of
ubuntu/linux-image-3.16.0-24-powerpc-smp<3.16.0-24.32
3.16.0-24.32
Ubuntu 22.04 LTS=14.10
All of
ubuntu/linux-image-3.16.0-24-powerpc64-emb<3.16.0-24.32
3.16.0-24.32
Ubuntu 22.04 LTS=14.10
All of
ubuntu/linux-image-3.16.0-24-lowlatency<3.16.0-24.32
3.16.0-24.32
Ubuntu 22.04 LTS=14.10
All of
ubuntu/linux-image-3.16.0-24-generic<3.16.0-24.32
3.16.0-24.32
Ubuntu 22.04 LTS=14.10
All of
ubuntu/linux-image-3.16.0-24-generic-lpae<3.16.0-24.32
3.16.0-24.32
Ubuntu 22.04 LTS=14.10

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-2396-1?

    The severity of USN-2396-1 is categorized as high due to the potential for denial of service via guest user access.

  • How do I fix USN-2396-1?

    To fix USN-2396-1, upgrade the affected packages to the remedied version 3.16.0-24.32.

  • Which systems are affected by USN-2396-1?

    USN-2396-1 affects Ubuntu 14.10 systems running specific kernel packages.

  • What kind of vulnerability is described in USN-2396-1?

    USN-2396-1 describes a vulnerability in KVM related to mishandling noncanonical addresses leading to system crashes.

  • What potential impact does USN-2396-1 have on my system?

    The potential impact of USN-2396-1 includes system crashes resulting from guest user malicious actions.

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