CWE
416 362
Advisory Published

USN-2890-1: Linux kernel vulnerabilities

First published: Tue Feb 02 2016(Updated: )

It was discovered that a use-after-free vulnerability existed in the AF_UNIX implementation in the Linux kernel. A local attacker could use crafted epoll_ctl calls to cause a denial of service (system crash) or expose sensitive information. (CVE-2013-7446) It was discovered that the KVM implementation in the Linux kernel did not properly restore the values of the Programmable Interrupt Timer (PIT). A user-assisted attacker in a KVM guest could cause a denial of service in the host (system crash). (CVE-2015-7513) It was discovered that the Linux kernel keyring subsystem contained a race between read and revoke operations. A local attacker could use this to cause a denial of service (system crash). (CVE-2015-7550) Sasha Levin discovered that the Reliable Datagram Sockets (RDS) implementation in the Linux kernel had a race condition when checking whether a socket was bound or not. A local attacker could use this to cause a denial of service (system crash). (CVE-2015-7990) It was discovered that the Btrfs implementation in the Linux kernel incorrectly handled compressed inline extants on truncation. A local attacker could use this to expose sensitive information. (CVE-2015-8374) 郭永刚 discovered that the Linux kernel networking implementation did not validate protocol identifiers for certain protocol families, A local attacker could use this to cause a denial of service (system crash) or possibly gain administrative privileges. (CVE-2015-8543) Dmitry Vyukov discovered that the pptp implementation in the Linux kernel did not verify an address length when setting up a socket. A local attacker could use this to craft an application that exposed sensitive information from kernel memory. (CVE-2015-8569) David Miller discovered that the Bluetooth implementation in the Linux kernel did not properly validate the socket address length for Synchronous Connection-Oriented (SCO) sockets. A local attacker could use this to expose sensitive information. (CVE-2015-8575) It was discovered that the netfilter Network Address Translation (NAT) implementation did not ensure that data structures were initialized when handling IPv4 addresses. An attacker could use this to cause a denial of service (system crash). (CVE-2015-8787)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-4.2.0-27-lowlatency<4.2.0-27.32
4.2.0-27.32
=15.10
All of
ubuntu/linux-image-4.2.0-27-generic-lpae<4.2.0-27.32
4.2.0-27.32
=15.10
All of
ubuntu/linux-image-4.2.0-27-powerpc-e500mc<4.2.0-27.32
4.2.0-27.32
=15.10
All of
ubuntu/linux-image-4.2.0-27-powerpc64-emb<4.2.0-27.32
4.2.0-27.32
=15.10
All of
ubuntu/linux-image-4.2.0-27-powerpc-smp<4.2.0-27.32
4.2.0-27.32
=15.10
All of
ubuntu/linux-image-4.2.0-27-powerpc64-smp<4.2.0-27.32
4.2.0-27.32
=15.10
All of
ubuntu/linux-image-4.2.0-27-generic<4.2.0-27.32
4.2.0-27.32
=15.10

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-2890-1?

    The severity of USN-2890-1 is high.

  • How do I fix USN-2890-1?

    To fix USN-2890-1, update your Ubuntu Linux kernel to version 4.2.0-27.32 or later.

  • What is the affected software for USN-2890-1?

    The affected software for USN-2890-1 is Ubuntu 15.10 with the Linux kernel version 4.2.0-27-lowlatency, 4.2.0-27-generic-lpae, 4.2.0-27-powerpc-e500mc, 4.2.0-27-powerpc64-emb, 4.2.0-27-powerpc-smp, 4.2.0-27-powerpc64-smp, or 4.2.0-27-generic.

  • What is the vulnerability description of CVE-2013-7446?

    The vulnerability description of CVE-2013-7446 is a use-after-free vulnerability in the AF_UNIX implementation in the Linux kernel, which could be exploited by a local attacker to cause a denial of service or expose sensitive information.

  • What is the vulnerability description of CVE-2015-7513?

    The vulnerability description of CVE-2015-7513 is a KVM implementation vulnerability in the Linux kernel, which could allow a privileged attacker in a guest VM to cause a denial of service or escalate privileges in the host system.

  • What is the vulnerability description of CVE-2015-7550?

    The vulnerability description of CVE-2015-7550 is a race condition vulnerability in the Linux kernel's keyring handling, which could allow a local attacker to cause a denial of service or escalate privileges.

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