CVE-2015-7837

    Dashboard / Vulnerabilities / CVE-2015-7837

    CVE-2015-7837

    Published: 19 Sept 2017Last Modified: 10 Apr 2026

    Summary:

    Details: The Linux kernel, as used in Red Hat Enterprise Linux 7, kernel-rt, and Enterprise MRG 2 and when booted with UEFI Secure Boot enabled, allows local users to bypass intended securelevel/secureboot restrictions by leveraging improper handling of secure_boot flag across kexec reboot.

    References: http://rhn.redhat.com/errata/RHSA-2015-2152.html, http://rhn.redhat.com/errata/RHSA-2015-2411.html, http://www.openwall.com/lists/oss-security/2015/10/15/6, http://www.securityfocus.com/bid/77097, https://bugzilla.redhat.com/show_bug.cgi?id=1272472, https://github.com/mjg59/linux/commit/4b2b64d5a6ebc84214755ebccd599baef7c1b798, http://www.openwall.com/lists/oss-security/2015/10/15/6, https://bugzilla.redhat.com/show_bug.cgi?id=1272472, https://github.com/mjg59/linux/commit/4b2b64d5a6ebc84214755ebccd599baef7c1b798

    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