CVE & CISA-KEV Catalog

CVE-2015-7837

MEDIUM
5.5
CVSS v3
NVD

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.

CWE-254

How to fix

Remediation Available
linuxDebian
Fixed in:4.5.1-1CVE-2015-7837
Fixed in:4.5.1-1CVE-2015-7837
Fixed in:4.5.1-1CVE-2015-7837
Fixed in:4.5.1-1CVE-2015-7837
linuxUbuntu
Fixed in:4.4.0-93.116USN-3405-1
linux-awsUbuntu
Fixed in:4.4.0-1032.41USN-3405-1
linux-gkeUbuntu
Fixed in:4.4.0-1028.28USN-3405-1
linux-image-4.4.0-1028-gkeUbuntu
Fixed in:4.4.0-1028.28USN-3405-1
linux-image-4.4.0-1032-awsUbuntu
Fixed in:4.4.0-1032.41USN-3405-1
linux-image-4.4.0-1071-raspi2Ubuntu
Fixed in:4.4.0-1071.79USN-3405-1
linux-image-4.4.0-1073-snapdragonUbuntu
Fixed in:4.4.0-1073.78USN-3405-1
linux-image-4.4.0-93-genericUbuntu
Fixed in:4.4.0-93.116~14.04.1USN-3405-2
Fixed in:4.4.0-93.116USN-3405-1
linux-image-4.4.0-93-generic-lpaeUbuntu
Fixed in:4.4.0-93.116~14.04.1USN-3405-2
Fixed in:4.4.0-93.116USN-3405-1
linux-image-4.4.0-93-lowlatencyUbuntu
Fixed in:4.4.0-93.116~14.04.1USN-3405-2
Fixed in:4.4.0-93.116USN-3405-1
linux-image-4.4.0-93-powerpc-e500mcUbuntu
Fixed in:4.4.0-93.116~14.04.1USN-3405-2
Fixed in:4.4.0-93.116USN-3405-1
linux-image-4.4.0-93-powerpc-smpUbuntu
Fixed in:4.4.0-93.116~14.04.1USN-3405-2
Fixed in:4.4.0-93.116USN-3405-1
linux-image-4.4.0-93-powerpc64-embUbuntu
Fixed in:4.4.0-93.116~14.04.1USN-3405-2
Fixed in:4.4.0-93.116USN-3405-1
linux-image-4.4.0-93-powerpc64-smpUbuntu
Fixed in:4.4.0-93.116~14.04.1USN-3405-2
Fixed in:4.4.0-93.116USN-3405-1
linux-lts-xenialUbuntu
Fixed in:4.4.0-93.116~14.04.1USN-3405-2
linux-raspi2Ubuntu
Fixed in:4.4.0-1071.79USN-3405-1
linux-snapdragonUbuntu
Fixed in:4.4.0-1073.78USN-3405-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityHigh
AvailabilityNone

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Exploit Intelligence

0.40%probability of exploitation in 30 days
32ndpercentile

Low risk: more likely to be exploited than 32% of all known CVEs.

References

Related Vulnerabilities

Other CWE-254 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2016-0161Medium6.569%--
CVE-2016-2296Critical9.464%--
CVE-2015-1793Medium6.562%-Fix
CVE-2016-2118High7.537%-Fix
CVE-2016-3238High8.135%--
CVE-2016-3198Medium6.532%--
Embed a live status badge for CVE-2015-7837
CVE-2015-7837 severity badge

Markdown

[![CVE-2015-7837](https://tridentstack.com/cve/badge/CVE-2015-7837.svg)](https://tridentstack.com/cve/CVE-2015-7837)

HTML

<a href="https://tridentstack.com/cve/CVE-2015-7837"><img src="https://tridentstack.com/cve/badge/CVE-2015-7837.svg" alt="CVE-2015-7837"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.