Exploited
medium
6.9
CWE
362
Advisory Published
CVE Published
Updated

CVE-2014-0196: Linux Kernel Race Condition Vulnerability

First published: Thu May 01 2014(Updated: )

It is unexpected and not allowed to call TTY buffer helpers like tty_insert_flip_string concurrently. This may lead to crashes when ECHOing is enabled and concurrect writers call pty_write in the meantime. In that case the two writers: * the ECHOing from a workqueue and * pty_write from the process race and can overflow the corresponding TTY buffer. An unprivileged local user could use this flaw to crash the system or, potentially, escalate their privileges on the system. References: <a href="http://seclists.org/oss-sec/2014/q2/243">http://seclists.org/oss-sec/2014/q2/243</a>

Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
redhat/kernel<0:2.6.32-358.6.1.el6
0:2.6.32-358.6.1.el6
redhat/kernel<0:2.6.32-220.51.1.el6
0:2.6.32-220.51.1.el6
redhat/kernel<0:2.6.32-279.43.2.el6
0:2.6.32-279.43.2.el6
redhat/kernel<0:3.10.0-123.1.2.el7
0:3.10.0-123.1.2.el7
redhat/kernel-rt<0:3.10.33-rt32.34.el6
0:3.10.33-rt32.34.el6
Linux kernel
debian/linux
5.10.223-1
5.10.226-1
6.1.123-1
6.1.128-1
6.12.12-1
6.12.15-1
Linux Kernel<=3.14.3
Debian=6.0
Debian=7.0
Red Hat Enterprise Linux=6.0
redhat enterprise Linux eus=6.3
redhat enterprise Linux eus=6.4
redhat enterprise Linux server eus=6.3
SUSE Linux Enterprise Desktop=11-sp3
SUSE Linux Enterprise High Availability Extension=11-sp3
SUSE Linux Enterprise Server=11-sp3
SUSE Linux Enterprise Server=11-sp3
Oracle Linux=6
Ubuntu=10.04
Ubuntu=12.04
Ubuntu=12.10
Ubuntu=13.10
Ubuntu=14.04
F5 Access Policy Manager>=11.1.0<=11.5.1
F5 BIG-IP Advanced Firewall Manager>=11.3.0<=11.5.1
F5 BIG-IP Analytics>=11.1.0<=11.5.1
f5 big-ip application acceleration manager>=11.4.0<=11.5.1
F5 Application Security Manager>=11.1.0<=11.5.1
F5 BIG-IP Edge Gateway>=11.1.0<=11.3.0
F5 BIG-IP Global Traffic Manager>=11.1.0<=11.5.1
F5 BIG-IP>=11.1.0<=11.5.1
F5 BIG-IP Local Traffic Manager>=11.1.0<=11.5.1
F5 BIG-IP Policy Enforcement Manager>=11.3.0<=11.5.1
F5 BIG-IP Protocol Security Manager>=11.1.0<=11.4.1
F5 BIG-IP WAN Optimization Manager>=11.1.0<=11.3.0
F5 BIG-IP WebAccelerator>=11.1.0<=11.3.0
F5 BIG-IQ Application Delivery Controller=4.5.0
F5 BIG-IP and BIG-IQ Centralized Management=4.6.0
F5 BIG-IQ Cloud and Orchestration>=4.0.0<=4.5.0
F5 BIG-IQ Cloud and Orchestration=1.0.0
F5 BIG-IQ Device>=4.2.0<=4.5.0
F5 BIG-IQ Security>=4.0.0<=4.5.0
F5 Enterprise Manager>=3.1.0<=3.1.1
Linux Kernel>2.6.31<3.2.59
Linux Kernel>=3.3<3.4.91
Linux Kernel>=3.5<3.10.40
Linux Kernel>=3.11<3.12.20
Linux Kernel>=3.13<3.14.4
Linux Kernel=2.6.31
Linux Kernel=2.6.31-rc3
Linux Kernel=2.6.31-rc4
Linux Kernel=2.6.31-rc5
Linux Kernel=2.6.31-rc6
Linux Kernel=2.6.31-rc7
Linux Kernel=2.6.31-rc8
Linux Kernel=2.6.31-rc9
F5 Enterprise Manager=3.1.0
F5 Enterprise Manager=3.1.1

Remedy

https://bugzilla.redhat.com/show_bug.cgi?id=1094232

Remedy

https://github.com/torvalds/linux/commit/4291086b1f081b869c6d79e5b7441633dc3ace00

Remedy

The impacted product is end-of-life and should be disconnected if still in use.

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2014-0196?

    CVE-2014-0196 has been assigned a moderate severity rating due to its potential to cause crashes under specific conditions.

  • How do I fix CVE-2014-0196?

    To fix CVE-2014-0196, update the kernel to versions 2.6.32-358.6.1.el6 or later, or to any fixed 3.x version as specified in vendor patches.

  • What platforms are affected by CVE-2014-0196?

    CVE-2014-0196 affects various Linux kernel versions, particularly those from Red Hat, Debian, and Ubuntu distributions.

  • Can CVE-2014-0196 be exploited remotely?

    CVE-2014-0196 may be exploited locally under certain conditions but is not considered to be directly exploitable remotely.

  • What symptoms might indicate an issue caused by CVE-2014-0196?

    Symptoms of CVE-2014-0196 may include unexpected crashes or instability in systems utilizing concurrent writing to TTY devices.

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