UBUNTU-CVE-2017-5669

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    UBUNTU-CVE-2017-5669

    Published: 24 Feb 2017Last Modified: 26 Aug 2026
    Upstream:
    CVE-2017-5669
    Aliases:
    USN-3265-1
    USN-3265-2
    USN-3361-1

    Summary:

    Details: The do_shmat function in ipc/shm.c in the Linux kernel through 4.9.12 does not restrict the address calculated by a certain rounding operation, which allows local users to map page zero, and consequently bypass a protection mechanism that exists for the mmap system call, by making crafted shmget and shmat system calls in a privileged context.

    References: https://ubuntu.com/security/CVE-2017-5669, https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/commit/?id=e1d35d4dc7f089e6c9c080d556feedf9c706f0c7, https://ubuntu.com/security/notices/USN-3265-1, https://ubuntu.com/security/notices/USN-3265-2, https://ubuntu.com/security/notices/USN-3361-1, https://ubuntu.com/security/notices/USN-3583-1, https://ubuntu.com/security/notices/USN-3583-2, https://www.cve.org/CVERecord?id=CVE-2017-5669

    Affected packages

    Package

    Name: linux

    Purl: pkg:deb/ubuntu/linux?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.13.0-142.191

    Affected versions

    3.11.0-12.19

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High