Advisory Published

USN-2792-1: Linux kernel vulnerabilities

First published: Thu Nov 05 2015(Updated: )

Dmitry Vyukov discovered that the Linux kernel did not properly initialize IPC object state in certain situations. A local attacker could use this to escalate their privileges, expose confidential information, or cause a denial of service (system crash). (CVE-2015-7613) 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 in certain situations, a directory could be renamed outside of a bind mounted location. An attacker could use this to escape bind mount containment and gain access to sensitive information. (CVE-2015-2925) Moein Ghasemzadeh discovered that the USB WhiteHEAT serial driver contained hardcoded attributes about the USB devices. An attacker could construct a fake WhiteHEAT USB device that, when inserted, causes a denial of service (system crash). (CVE-2015-5257)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-3.2.0-93-omap<3.2.0-93.133
3.2.0-93.133
=12.04
All of
ubuntu/linux-image-3.2.0-93-generic<3.2.0-93.133
3.2.0-93.133
=12.04
All of
ubuntu/linux-image-3.2.0-93-powerpc-smp<3.2.0-93.133
3.2.0-93.133
=12.04
All of
ubuntu/linux-image-3.2.0-93-powerpc64-smp<3.2.0-93.133
3.2.0-93.133
=12.04
All of
ubuntu/linux-image-3.2.0-93-virtual<3.2.0-93.133
3.2.0-93.133
=12.04
All of
ubuntu/linux-image-3.2.0-93-generic-pae<3.2.0-93.133
3.2.0-93.133
=12.04
All of
ubuntu/linux-image-3.2.0-93-highbank<3.2.0-93.133
3.2.0-93.133
=12.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-2792-1?

    The severity of USN-2792-1 is high.

  • How can a local attacker exploit CVE-2015-7613?

    A local attacker can exploit CVE-2015-7613 to escalate their privileges, expose confidential information, or cause a denial of service (system crash).

  • Which Ubuntu versions are affected by USN-2792-1?

    Ubuntu version 12.04 is affected by USN-2792-1.

  • Which Linux kernel versions should be updated to fix USN-2792-1?

    Linux kernel versions 3.2.0-93.133 and below should be updated to fix USN-2792-1.

  • Where can I find more information about USN-2792-1?

    You can find more information about USN-2792-1 at https://ubuntu.com/security/CVE-2015-0272, https://ubuntu.com/security/CVE-2015-2925, and https://ubuntu.com/security/CVE-2015-5257.

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