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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- https://github.com/mjg59/linux/commit/4b2b64d5a6ebc84214755ebccd599baef7c1b798 ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=1272472 ↗
- http://rhn.redhat.com/errata/RHSA-2015-2152.html ↗
- http://www.securityfocus.com/bid/77097 ↗
- http://www.openwall.com/lists/oss-security/2015/10/15/6 ↗
- http://rhn.redhat.com/errata/RHSA-2015-2411.html ↗