CVE-2015-7837

moderate-risk
Published 2017-09-19

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.

Do I need to act?

-
0.07% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (9)

Kernel-Rt

Affected Vendors

Redhat

References (12)

Vendor Advisory http://rhn.redhat.com/errata/RHSA-2015-2152.html
Vendor Advisory http://rhn.redhat.com/errata/RHSA-2015-2411.html
Mailing List http://www.openwall.com/lists/oss-security/2015/10/15/6
Third Party Advisory http://www.securityfocus.com/bid/77097
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1272472
Issue Tracking https://github.com/mjg59/linux/commit/4b2b64d5a6ebc84214755ebccd599baef7c1b798
Vendor Advisory http://rhn.redhat.com/errata/RHSA-2015-2152.html
Vendor Advisory http://rhn.redhat.com/errata/RHSA-2015-2411.html
Mailing List http://www.openwall.com/lists/oss-security/2015/10/15/6
Third Party Advisory http://www.securityfocus.com/bid/77097
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1272472
Issue Tracking https://github.com/mjg59/linux/commit/4b2b64d5a6ebc84214755ebccd599baef7c1b798
33
/ 100
moderate-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 15/34 · Moderate