Ubuntu 3678-4: Linux kernel (Raspberry Pi 2) vulnerabilities

    Date15 Jun 2018
    Posted ByAnthony Pell
    Several security issues were fixed in the Linux kernel.
    Ubuntu Security Notice USN-3678-4
    June 15, 2018
    linux-raspi2 vulnerabilities
    A security issue affects these releases of Ubuntu and its derivatives:
    - Ubuntu 18.04 LTS
    Several security issues were fixed in the Linux kernel.
    Software Description:
    - linux-raspi2: Linux kernel for Raspberry Pi 2
    Wen Xu discovered that the ext4 filesystem implementation in the Linux
    kernel did not properly handle corrupted meta data in some situations. An
    attacker could use this to specially craft an ext4 file system that caused
    a denial of service (system crash) when mounted. (CVE-2018-1092)
    It was discovered that the 802.11 software simulator implementation in the
    Linux kernel contained a memory leak when handling certain error
    conditions. A local attacker could possibly use this to cause a denial of
    service (memory exhaustion). (CVE-2018-8087)
    It was discovered that a memory leak existed in the Serial Attached SCSI
    (SAS) implementation in the Linux kernel. A physically proximate attacker
    could use this to cause a denial of service (memory exhaustion).
    Update instructions:
    The problem can be corrected by updating your system to the following
    package versions:
    Ubuntu 18.04 LTS:
      linux-image-4.15.0-1012-raspi2  4.15.0-1012.13
    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.
      CVE-2018-10021, CVE-2018-1092, CVE-2018-8087
    Package Information:

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