CVE-2015-7837: Red Hat Enterprise Linux

Medium severity, CVSS 5.5. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Red Hat Enterprise Linux: version 7.0 only; version 7.2 only; version 7.3 only
• Red Hat Enterprise Linux Desktop: version 7.0 only
• Red Hat Enterprise Linux Server Aus: version 7.3 only; version 7.4 only
• Red Hat Enterprise Linux Workstation: version 7.0 only
• Red Hat Enterprise Mrg: version 2.0 only
• Red Hat Kernel-Rt: version 7.0 only

Published 2017-09-19. Last modified 2026-06-17.