CVE-2014-0205 Use after free in n/a

Medium 6.9 Published Updated

Local attackers can trigger a use-after-free in the Linux kernel futex implementation to cause a system crash or potentially escalate privileges.

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-2014-0205?

CVE-2014-0205 is a medium-severity use after free vulnerability in Linux kernel, published on 28 Sep 2014. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The futex_wait function in kernel/futex.c in the Linux kernel before 2.6.37 does not properly maintain a certain reference count during requeue operations, which allows local users to cause a denial of service (use-after-free and system crash) or possibly gain privileges via a crafted application that triggers a zero count.

Weakness: CWE-119

Which versions are affected by CVE-2014-0205?

It affects 1 product.

Linux distribution packages (35)
kernel Red Hat:rhel_eus:6.4::computenodeAll versions0:2.6.32-358.49.1.el6
kernel-debug Red Hat:rhel_eus:6.4::computenodeAll versions0:2.6.32-358.49.1.el6
kernel-debug-debuginfo Red Hat:rhel_eus:6.4::computenodeAll versions0:2.6.32-358.49.1.el6
kernel-debug-devel Red Hat:rhel_eus:6.4::computenodeAll versions0:2.6.32-358.49.1.el6
kernel-debuginfo Red Hat:rhel_eus:6.4::computenodeAll versions0:2.6.32-358.49.1.el6
kernel-debuginfo-common-x86_64 Red Hat:rhel_eus:6.4::computenodeAll versions0:2.6.32-358.49.1.el6
kernel-devel Red Hat:rhel_eus:6.4::computenodeAll versions0:2.6.32-358.49.1.el6
kernel-doc Red Hat:rhel_eus:6.4::computenodeAll versions0:2.6.32-358.49.1.el6
kernel-firmware Red Hat:rhel_eus:6.4::computenodeAll versions0:2.6.32-358.49.1.el6
kernel-headers Red Hat:rhel_eus:6.4::computenodeAll versions0:2.6.32-358.49.1.el6
perf Red Hat:rhel_eus:6.4::computenodeAll versions0:2.6.32-358.49.1.el6
perf-debuginfo Red Hat:rhel_eus:6.4::computenodeAll versions0:2.6.32-358.49.1.el6
python-perf Red Hat:rhel_eus:6.4::computenodeAll versions0:2.6.32-358.49.1.el6
python-perf-debuginfo Red Hat:rhel_eus:6.4::computenodeAll versions0:2.6.32-358.49.1.el6
kernel Red Hat:rhel_eus:6.4::serverAll versions0:2.6.32-358.49.1.el6
kernel-bootwrapper Red Hat:rhel_eus:6.4::serverAll versions0:2.6.32-358.49.1.el6
kernel-debug Red Hat:rhel_eus:6.4::serverAll versions0:2.6.32-358.49.1.el6
kernel-debug-debuginfo Red Hat:rhel_eus:6.4::serverAll versions0:2.6.32-358.49.1.el6
kernel-debug-devel Red Hat:rhel_eus:6.4::serverAll versions0:2.6.32-358.49.1.el6
kernel-debuginfo Red Hat:rhel_eus:6.4::serverAll versions0:2.6.32-358.49.1.el6
kernel-debuginfo-common-i686 Red Hat:rhel_eus:6.4::serverAll versions0:2.6.32-358.49.1.el6
kernel-debuginfo-common-ppc64 Red Hat:rhel_eus:6.4::serverAll versions0:2.6.32-358.49.1.el6
kernel-debuginfo-common-s390x Red Hat:rhel_eus:6.4::serverAll versions0:2.6.32-358.49.1.el6
kernel-debuginfo-common-x86_64 Red Hat:rhel_eus:6.4::serverAll versions0:2.6.32-358.49.1.el6
kernel-devel Red Hat:rhel_eus:6.4::serverAll versions0:2.6.32-358.49.1.el6
kernel-doc Red Hat:rhel_eus:6.4::serverAll versions0:2.6.32-358.49.1.el6
kernel-firmware Red Hat:rhel_eus:6.4::serverAll versions0:2.6.32-358.49.1.el6
kernel-headers Red Hat:rhel_eus:6.4::serverAll versions0:2.6.32-358.49.1.el6
kernel-kdump Red Hat:rhel_eus:6.4::serverAll versions0:2.6.32-358.49.1.el6
kernel-kdump-debuginfo Red Hat:rhel_eus:6.4::serverAll versions0:2.6.32-358.49.1.el6
kernel-kdump-devel Red Hat:rhel_eus:6.4::serverAll versions0:2.6.32-358.49.1.el6
perf Red Hat:rhel_eus:6.4::serverAll versions0:2.6.32-358.49.1.el6
perf-debuginfo Red Hat:rhel_eus:6.4::serverAll versions0:2.6.32-358.49.1.el6
python-perf Red Hat:rhel_eus:6.4::serverAll versions0:2.6.32-358.49.1.el6
python-perf-debuginfo Red Hat:rhel_eus:6.4::serverAll versions0:2.6.32-358.49.1.el6

Products include Linux kernel.

How do I fix CVE-2014-0205?

Apply the vendor's patch.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2014-0205 being exploited?

There is no known exploitation of CVE-2014-0205 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as DEBIAN-CVE-2014-0205, GHSA-cwrh-45v3-q8mf, RHSA-2014:1365.

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