Description
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 (6)
Core 6
Core References
Issue Tracking, Third Party Advisory x_refsource_confirm
https://github.com/mjg59/linux/commit/4b2b64d5a6ebc84214755ebccd599baef7c1b798
Issue Tracking, Vendor Advisory x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=1272472
Vendor Advisory vendor-advisory
x_refsource_redhat
http://rhn.redhat.com/errata/RHSA-2015-2152.html
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/77097
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2015/10/15/6
Vendor Advisory vendor-advisory
x_refsource_redhat
http://rhn.redhat.com/errata/RHSA-2015-2411.html
Scores
CVSS v3
5.5
EPSS
0.0040
EPSS Percentile
33.0%
Attack Vector
LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Details
CWE
CWE-254
Status
published
Products (9)
redhat/enterprise_linux
7.0
redhat/enterprise_linux
7.2
redhat/enterprise_linux
7.3
redhat/enterprise_linux_desktop
7.0
redhat/enterprise_linux_server_aus
7.3
redhat/enterprise_linux_server_aus
7.4
redhat/enterprise_linux_workstation
7.0
redhat/enterprise_mrg
2.0
redhat/kernel-rt
7.0
Published
Sep 19, 2017
Tracked Since
Feb 18, 2026