CVE-2015-7837

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

• 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

Published

Sep 19, 2017

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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