Ubuntu 3797-1: Linux kernel vulnerabilities

    Date22 Oct 2018
    CategoryUbuntu
    2762
    Posted ByAnthony Pell
    Several security issues were fixed in the Linux kernel.
    ==========================================================================
    Ubuntu Security Notice USN-3797-1
    October 23, 2018
    
    linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 16.04 LTS
    
    Summary:
    
    Several security issues were fixed in the Linux kernel.
    
    Software Description:
    - linux: Linux kernel
    - linux-aws: Linux kernel for Amazon Web Services (AWS) systems
    - linux-kvm: Linux kernel for cloud environments
    - linux-raspi2: Linux kernel for Raspberry Pi 2
    - linux-snapdragon: Linux kernel for Snapdragon processors
    
    Details:
    
    Noam Rathaus discovered that a use-after-free vulnerability existed in the
    Infiniband implementation in the Linux kernel. An attacker could use this
    to cause a denial of service (system crash). (CVE-2018-14734)
    
    It was discovered that an integer overflow existed in the CD-ROM driver of
    the Linux kernel. A local attacker could use this to expose sensitive
    information (kernel memory). (CVE-2018-16658)
    
    It was discovered that an integer overflow existed in the HID Bluetooth
    implementation in the Linux kernel that could lead to a buffer overwrite.
    An attacker could use this to cause a denial of service (system crash) or
    possibly execute arbitrary code. (CVE-2018-9363)
    
    Yves Younan discovered that the CIPSO labeling implementation in the Linux
    kernel did not properly handle IP header options in some situations. A
    remote attacker could use this to specially craft network traffic that
    could cause a denial of service (infinite loop). (CVE-2018-10938)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 16.04 LTS:
      linux-image-4.4.0-1036-kvm      4.4.0-1036.42
      linux-image-4.4.0-1070-aws      4.4.0-1070.80
      linux-image-4.4.0-1099-raspi2   4.4.0-1099.107
      linux-image-4.4.0-1103-snapdragon  4.4.0-1103.108
      linux-image-4.4.0-138-generic   4.4.0-138.164
      linux-image-4.4.0-138-generic-lpae  4.4.0-138.164
      linux-image-4.4.0-138-lowlatency  4.4.0-138.164
      linux-image-4.4.0-138-powerpc-e500mc  4.4.0-138.164
      linux-image-4.4.0-138-powerpc-smp  4.4.0-138.164
      linux-image-4.4.0-138-powerpc64-emb  4.4.0-138.164
      linux-image-4.4.0-138-powerpc64-smp  4.4.0-138.164
      linux-image-aws                 4.4.0.1070.72
      linux-image-generic             4.4.0.138.144
      linux-image-generic-lpae        4.4.0.138.144
      linux-image-kvm                 4.4.0.1036.35
      linux-image-lowlatency          4.4.0.138.144
      linux-image-powerpc-e500mc      4.4.0.138.144
      linux-image-powerpc-smp         4.4.0.138.144
      linux-image-powerpc64-emb       4.4.0.138.144
      linux-image-powerpc64-smp       4.4.0.138.144
      linux-image-raspi2              4.4.0.1099.99
      linux-image-snapdragon          4.4.0.1103.95
    
    After a standard system update you need to reboot your computer to make
    all the necessary changes.
    
    ATTENTION: Due to an unavoidable ABI change the kernel updates have
    been given a new version number, which requires you to recompile and
    reinstall all third party kernel modules you might have installed.
    Unless you manually uninstalled the standard kernel metapackages
    (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
    linux-powerpc), a standard system upgrade will automatically perform
    this as well.
    
    References:
      https://usn.ubuntu.com/usn/usn-3797-1
      CVE-2018-10938, CVE-2018-14734, CVE-2018-16658, CVE-2018-9363
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux/4.4.0-138.164
      https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1070.80
      https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1036.42
      https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1099.107
      https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1103.108
    
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