CVE-2015-7837

kernel: securelevel disabled after kexec

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Severity

Low

Red Hat Product Security

1.9

CVSS 2.0

Review impact separately from score.

Published · October 14, 2015

Updated · June 28, 2026

Description

A flaw was found in the way the Linux kernel handled the securelevel functionality after performing a kexec operation. A local attacker could use this flaw to bypass the security mechanism of the securelevel/secureboot combination.

Statement

This issue does not affect the Linux kernels as shipped with Red Hat Enterprise Linux 5 and 6.

This issue affects the Linux kernels as shipped with Red Hat Enterprise Linux 7, kernel-rt and MRG-2.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 2.0 · 1.9
AV:L/AC:M/Au:N/C:N/I:P/A:N

CWE-456 · Missing Initialization of a Variable