CVE-2016-2143 Denial of service in n/a
Local attackers can crash the system on s390 Linux kernels via a crafted application due to improper page-table handling during fork.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2016-2143?
CVE-2016-2143 is a high-severity denial of service vulnerability in Debian Debian Linux, published on 27 Apr 2016. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
The fork implementation in the Linux kernel before 4.5 on s390 platforms mishandles the case of four page-table levels, which allows local users to cause a denial of service (system crash) or possibly have unspecified other impact via a crafted application, related to arch/s390/include/asm/mmu_context.h and arch/s390/include/asm/pgalloc.h.
Weakness: CWE-20
Which versions are affected by CVE-2016-2143?
It affects 4 products.
Products include Debian Debian Linux, Linux kernel, Oracle Linux, Redhat Enterprise Linux.
How do I fix CVE-2016-2143?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2016-2143 being exploited?
There is no known exploitation of CVE-2016-2143 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2016-2143, GHSA-h8j9-2jj6-73jj.