What is CVE-2015-7837?

CVE-2015-7837 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10. CVE-2015-7837 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2015-7837?

CVE-2015-7837 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

Is there a patch available for CVE-2015-7837?

No patch is currently available for CVE-2015-7837. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2015-7837 actively exploited?

CVE-2015-7837 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2015-7837

Medium

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.

Package Linux Kernel

Published 2017-09-19

Last modified 2026-05-13

CVSS version 3.0

Patch available

Awaiting data

CVSS 3.0 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

High

Availability

None

Vector string

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

Weakness type

CWE-254

CVE-2015-7837 is classified as CWE-254

See CWE-254 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2015-7837 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Red Hat
http://rhn.redhat.com/errata/RHSA-2015-2152.html

Vendor Advisory
Red Hat
http://rhn.redhat.com/errata/RHSA-2015-2411.html

Vendor Advisory
Openwall
http://www.openwall.com/lists/oss-security/2015/10/15/6

Mailing List Third Party Advisory
Securityfocus
http://www.securityfocus.com/bid/77097

Third Party Advisory VDB Entry
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=1272472

Issue Tracking Vendor Advisory
GitHub
https://github.com/mjg59/linux/commit/4b2b64d5a6ebc84214755ebccd599baef7c1b798

Issue Tracking Third Party Advisory

Details

CVE ID CVE-2015-7837

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.0

Published 2017-09-19

Modified 2026-05-13

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2015-7837?

CVE-2015-7837 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . CVE-2015-7837 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2015-7837?

CVE-2015-7837 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.0). The vector string is CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
Is there a patch available for CVE-2015-7837?

No patch is currently available for CVE-2015-7837. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2015-7837 actively exploited?

No — CVE-2015-7837 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.