UBUNTU-CVE-2011-2525

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    UBUNTU-CVE-2011-2525

    Published: 6 Oct 2011Last Modified: 4 Feb 2026
    Upstream:
    CVE-2011-2525
    Aliases:
    USN-1241-1
    USN-1256-1
    USN-1268-1

    Summary:

    Details: The qdisc_notify function in net/sched/sch_api.c in the Linux kernel before 2.6.35 does not prevent tc_fill_qdisc function calls referencing builtin (aka CQ_F_BUILTIN) Qdisc structures, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) or possibly have unspecified other impact via a crafted call.

    References: https://ubuntu.com/security/CVE-2011-2525, http://kerneltrap.org/mailarchive/linux-netdev/2010/5/21/6277805, http://www.debian.org/security/2011/dsa-2303, https://ubuntu.com/security/notices/USN-1241-1, https://ubuntu.com/security/notices/USN-1256-1, https://ubuntu.com/security/notices/USN-1268-1, https://ubuntu.com/security/notices/USN-1269-1, https://ubuntu.com/security/notices/USN-1274-1, https://ubuntu.com/security/notices/USN-1286-1, https://www.cve.org/CVERecord?id=CVE-2011-2525

    Affected packages

    Package

    Name: linux

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.11.0-12.19

    Affected versions

    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