UBUNTU-CVE-2016-2543

    Dashboard / Vulnerabilities / UBUNTU-CVE-2016-2543

    UBUNTU-CVE-2016-2543

    Published: 24 Feb 2016Last Modified: 26 Aug 2026
    Upstream:
    CVE-2016-2543
    Aliases:
    USN-2929-1
    USN-2929-2
    USN-2930-1

    Summary:

    Details: The snd_seq_ioctl_remove_events function in sound/core/seq/seq_clientmgr.c in the Linux kernel before 4.4.1 does not verify FIFO assignment before proceeding with FIFO clearing, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via a crafted ioctl call.

    References: https://ubuntu.com/security/CVE-2016-2543, http://www.openwall.com/lists/oss-security/2016/02/23/11, http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=030e2c78d3a91dd0d27fef37e91950dde333eba1, https://ubuntu.com/security/notices/USN-2931-1, https://ubuntu.com/security/notices/USN-2932-1, https://ubuntu.com/security/notices/USN-2929-2, https://ubuntu.com/security/notices/USN-2929-1, https://ubuntu.com/security/notices/USN-2930-1, https://ubuntu.com/security/notices/USN-2930-3, https://ubuntu.com/security/notices/USN-2930-2, https://ubuntu.com/security/notices/USN-2967-2, https://ubuntu.com/security/notices/USN-2967-1, https://www.cve.org/CVERecord?id=CVE-2016-2543

    Affected packages

    Package

    Name: linux

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.13.0-83.127

    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
    UBUNTU-CVE-2016-2543 | CVE-DB