UBUNTU-CVE-2015-8709

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    UBUNTU-CVE-2015-8709

    Published: 12 Dec 2015Last Modified: 26 Aug 2026
    Upstream:
    CVE-2015-8709
    Aliases:
    USN-2847-1
    USN-2848-1
    USN-2849-1

    Summary:

    Details: kernel/ptrace.c in the Linux kernel through 4.4.1 mishandles uid and gid mappings, which allows local users to gain privileges by establishing a user namespace, waiting for a root process to enter that namespace with an unsafe uid or gid, and then using the ptrace system call. NOTE: the vendor states "there is no kernel bug here.

    References: https://ubuntu.com/security/CVE-2015-8709, https://lkml.org/lkml/2015/12/12/259, https://ubuntu.com/security/notices/USN-2847-1, https://ubuntu.com/security/notices/USN-2848-1, https://ubuntu.com/security/notices/USN-2849-1, https://ubuntu.com/security/notices/USN-2850-1, https://ubuntu.com/security/notices/USN-2851-1, https://ubuntu.com/security/notices/USN-2852-1, https://ubuntu.com/security/notices/USN-2853-1, https://ubuntu.com/security/notices/USN-2854-1, http://www.openwall.com/lists/oss-security/2015/12/31/5, https://www.cve.org/CVERecord?id=CVE-2015-8709

    Affected packages

    Package

    Name: linux

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.13.0-103.150

    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