UBUNTU-CVE-2017-1000363

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    UBUNTU-CVE-2017-1000363

    Published: 25 May 2017Last Modified: 22 Apr 2026
    Aliases:
    USN-3342-1
    USN-3342-2
    USN-3343-1

    Summary:

    Details: Linux drivers/char/lp.c Out-of-Bounds Write. Due to a missing bounds check, and the fact that parport_ptr integer is static, a 'secure boot' kernel command line adversary (can happen due to bootloader vulns, e.g. Google Nexus 6's CVE-2016-10277, where due to a vulnerability the adversary has partial control over the command line) can overflow the parport_nr array in the following code, by appending many (>LP_NO) 'lp=none' arguments to the command line.

    References: https://ubuntu.com/security/CVE-2017-1000363, https://alephsecurity.com/vulns/aleph-2017023, https://git.kernel.org/linus/3e21f4af170bebf47c187c1ff8bf155583c9f3b1, https://ubuntu.com/security/notices/USN-3342-1, https://ubuntu.com/security/notices/USN-3343-1, https://ubuntu.com/security/notices/USN-3344-1, https://ubuntu.com/security/notices/USN-3344-2, https://ubuntu.com/security/notices/USN-3345-1, https://ubuntu.com/security/notices/USN-3343-2, https://ubuntu.com/security/notices/USN-3342-2, https://www.cve.org/CVERecord?id=CVE-2017-1000363

    Affected packages

    Package

    Name: linux

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.13.0-123.172

    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