CVE-2014-8559 Denial of service in n/a
Local attackers can cause a system hang or deadlock in the Linux kernel via a crafted application due to improper lock semantics in the dcache walk function.
- 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-2014-8559?
CVE-2014-8559 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 10 Nov 2014. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The d_walk function in fs/dcache.c in the Linux kernel through 3.17.2 does not properly maintain the semantics of rename_lock, which allows local users to cause a denial of service (deadlock and system hang) via a crafted application.
Weakness: CWE-400
Which versions are affected by CVE-2014-8559?
It affects 11 products.
Linux distribution packages (15)
kernel-rt Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-229.rt56.162.el6rt |
kernel-rt-debug Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-229.rt56.162.el6rt |
kernel-rt-debug-debuginfo Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-229.rt56.162.el6rt |
kernel-rt-debug-devel Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-229.rt56.162.el6rt |
kernel-rt-debuginfo Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-229.rt56.162.el6rt |
kernel-rt-debuginfo-common-x86_64 Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-229.rt56.162.el6rt |
kernel-rt-devel Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-229.rt56.162.el6rt |
kernel-rt-doc Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-229.rt56.162.el6rt |
kernel-rt-firmware Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-229.rt56.162.el6rt |
kernel-rt-trace Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-229.rt56.162.el6rt |
kernel-rt-trace-debuginfo Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-229.rt56.162.el6rt |
kernel-rt-trace-devel Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-229.rt56.162.el6rt |
kernel-rt-vanilla Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-229.rt56.162.el6rt |
kernel-rt-vanilla-debuginfo Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-229.rt56.162.el6rt |
kernel-rt-vanilla-devel Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-229.rt56.162.el6rt |
Products include Canonical Ubuntu Linux, Linux kernel, Novell Suse Linux Enterprise Desktop, Novell Suse Linux Enterprise Server, Opensuse Evergreen, Opensuse Opensuse and 5 more.
How do I fix CVE-2014-8559?
Apply the vendor's patch.
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-2014-8559 being exploited?
There is no known exploitation of CVE-2014-8559 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2014-8559, GHSA-qfrw-q7qp-v27x, RHSA-2015:1976, UBUNTU-CVE-2014-8559.