CVE-2015-7837

Name: CVE-2015-7837
Creator: NVD / NIST
Published: 2017-09-19T16:29:00.23+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.40%

Last modified Jun 17, 2026

CVE-2015-7837 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.40% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

0.40%

32.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-254

Affected Software

Vendor	Product	Versions
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

References

http://rhn.redhat.com/errata/RHSA-2015-2152.htmlVendor Advisory
http://rhn.redhat.com/errata/RHSA-2015-2411.htmlVendor Advisory
http://www.openwall.com/lists/oss-security/2015/10/15/6Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/77097Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1272472Issue Tracking, Vendor Advisory
https://github.com/mjg59/linux/commit/4b2b64d5a6ebc84214755ebccd599baef7c1b798Issue Tracking, Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-2152.htmlVendor Advisory
http://rhn.redhat.com/errata/RHSA-2015-2411.htmlVendor Advisory
http://www.openwall.com/lists/oss-security/2015/10/15/6Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/77097Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1272472Issue Tracking, Vendor Advisory
https://github.com/mjg59/linux/commit/4b2b64d5a6ebc84214755ebccd599baef7c1b798Issue Tracking, Third Party Advisory

Timeline

Published: Sep 19, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2015-7837?

How severe is CVE-2015-7837?

Severity scoring for CVE-2015-7837 is pending analysis. The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.

How do I fix CVE-2015-7837?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2015-7837?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST