CWE
416 476 362
Advisory Published

USN-3507-2: Linux kernel (GCP) vulnerabilities

First published: Fri Dec 08 2017(Updated: )

Mohamed Ghannam discovered that a use-after-free vulnerability existed in the Netlink subsystem (XFRM) in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16939) It was discovered that the Linux kernel did not properly handle copy-on- write of transparent huge pages. A local attacker could use this to cause a denial of service (application crashes) or possibly gain administrative privileges. (CVE-2017-1000405) Fan Wu, Haoran Qiu, and Shixiong Zhao discovered that the associative array implementation in the Linux kernel sometimes did not properly handle adding a new entry. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-12193) Eric Biggers discovered that the key management subsystem in the Linux kernel did not properly restrict adding a key that already exists but is uninstantiated. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-15299) It was discovered that a null pointer dereference error existed in the PowerPC KVM implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-15306) Eric Biggers discovered a race condition in the key management subsystem of the Linux kernel around keys in a negative state. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-15951)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-4.13.0-1002-gcp<4.13.0-1002.5
4.13.0-1002.5
Ubuntu gir1.2-packagekitglib-1.0=16.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID for this Linux kernel vulnerability?

    The vulnerability ID for this Linux kernel vulnerability is CVE-2017-16939.

  • What is the severity of the Linux kernel vulnerability?

    The severity of the Linux kernel vulnerability can lead to a denial of service (system crash) or possible execution of arbitrary code.

  • How can a local attacker exploit this vulnerability?

    A local attacker can exploit this vulnerability by causing a use-after-free vulnerability in the Netlink subsystem (XFRM) of the Linux kernel.

  • What is the affected software version for this vulnerability?

    The affected software version for this vulnerability is Linux kernel version 4.13.0-1002-gcp on Ubuntu 16.04.

  • Where can I find more information about this vulnerability?

    You can find more information about this vulnerability on the Ubuntu security advisory page.

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