CWE
362
Advisory Published

USN-3653-1: Linux kernel vulnerabilities

First published: Tue May 22 2018(Updated: )

Jann Horn and Ken Johnson discovered that microprocessors utilizing speculative execution of a memory read may allow unauthorized memory reads via a sidechannel attack. This flaw is known as Spectre Variant 4. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2018-3639) It was discovered that the netlink subsystem in the Linux kernel did not properly restrict observations of netlink messages to the appropriate net namespace. A local attacker could use this to expose sensitive information (kernel netlink traffic). (CVE-2017-17449) Tuba Yavuz discovered that a double-free error existed in the USBTV007 driver of the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-17975) It was discovered that a race condition existed in the Device Mapper component of the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-18203) It was discovered that an infinite loop could occur in the madvise(2) implementation in the Linux kernel in certain circumstances. A local attacker could use this to cause a denial of service (system hang). (CVE-2017-18208) Silvio Cesare discovered a buffer overwrite existed in the NCPFS implementation in the Linux kernel. A remote attacker controlling a malicious NCPFS server could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-8822)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-4.13.0-43-lowlatency<4.13.0-43.48
4.13.0-43.48
=17.10
All of
ubuntu/linux-image-generic<4.13.0.43.46
4.13.0.43.46
=17.10
All of
ubuntu/linux-image-4.13.0-43-generic<4.13.0-43.48
4.13.0-43.48
=17.10
All of
ubuntu/linux-image-generic-lpae<4.13.0.43.46
4.13.0.43.46
=17.10
All of
ubuntu/linux-image-4.13.0-43-generic-lpae<4.13.0-43.48
4.13.0-43.48
=17.10
All of
ubuntu/linux-image-lowlatency<4.13.0.43.46
4.13.0.43.46
=17.10

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID in USN-3653-1?

    The vulnerability ID in USN-3653-1 is CVE-2017-17449.

  • What is the severity of CVE-2017-17449?

    The severity of CVE-2017-17449 is not mentioned.

  • How can a local attacker exploit CVE-2017-17449?

    A local attacker can exploit CVE-2017-17449 to expose sensitive information, including kernel memory.

  • What is the remedy for CVE-2017-17449?

    The remedy for CVE-2017-17449 is to update to linux-image-4.13.0-43-lowlatency version 4.13.0-43.48.

  • Where can I find more information about CVE-2017-17449?

    You can find more information about CVE-2017-17449 on the Ubuntu Security Advisory page: https://ubuntu.com/security/CVE-2017-17449

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