CVE-2015-7837 Security feature bypass in n/a
Local users can bypass Secure Boot restrictions during kexec reboots due to improper flag handling in the Linux kernel.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2015-7837?
CVE-2015-7837 is a medium-severity vulnerability in Redhat Enterprise Linux, published on 19 Sep 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-254
Which versions are affected by CVE-2015-7837?
It affects 6 products.
Products include Redhat Enterprise Linux, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server Aus, Redhat Enterprise Linux Workstation, Redhat Enterprise Mrg, Redhat Kernel-Rt.
How do I fix CVE-2015-7837?
Apply the vendor's patch.
Is CVE-2015-7837 being exploited?
There is no known exploitation of CVE-2015-7837 in the wild and no public exploit code.
Other vulnerabilities in Redhat Enterprise Linux
- CVE-2018-14667 Red Hat JBoss RichFaces Framework Expression Language Injection
- CVE-2021-20325 Missing fixes for CVE-2021-40438 and CVE-2021-26691 in the versions of httpd, as shipped in Red Hat Enterprise Linux 8.5.0, causes a securit
- CVE-2018-25011 Memory corruption in libwebp
- CVE-2018-25014 Other in libwebp
- CVE-2014-3585 Supply chain in redhat-upgrade-tool
Sources
Also known as DEBIAN-CVE-2015-7837, GHSA-3cqh-r98g-rhgh, ROOT-OS-UBUNTU-2204-CVE-2015-7837, ROOT-OS-UBUNTU-2404-CVE-2015-7837, UBUNTU-CVE-2015-7837.