CVE-2014-4655

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    CVE-2014-4655

    Published: 3 Jul 2014Last Modified: 10 Apr 2026

    Summary:

    Details: The snd_ctl_elem_add function in sound/core/control.c in the ALSA control implementation in the Linux kernel before 3.15.2 does not properly maintain the user_ctl_count value, which allows local users to cause a denial of service (integer overflow and limit bypass) by leveraging /dev/snd/controlCX access for a large number of SNDRV_CTL_IOCTL_ELEM_REPLACE ioctl calls.

    References: http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html, http://rhn.redhat.com/errata/RHSA-2014-1083.html, http://secunia.com/advisories/59434, http://secunia.com/advisories/59777, http://secunia.com/advisories/60545, http://secunia.com/advisories/60564, http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.15.2, http://www.openwall.com/lists/oss-security/2014/06/26/6, http://www.securityfocus.com/bid/68162, http://www.securitytracker.com/id/1036763, http://www.ubuntu.com/usn/USN-2334-1, http://www.ubuntu.com/usn/USN-2335-1, https://bugzilla.redhat.com/show_bug.cgi?id=1113445, https://github.com/torvalds/linux/commit/82262a46627bebb0febcc26664746c25cef08563, http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html, http://www.openwall.com/lists/oss-security/2014/06/26/6, https://github.com/torvalds/linux/commit/82262a46627bebb0febcc26664746c25cef08563, https://bugzilla.redhat.com/show_bug.cgi?id=1113445, http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=82262a46627bebb0febcc26664746c25cef08563

    Affected packages

    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