CVE-2014-0196

Name: CVE-2014-0196
Creator: NVD / NIST
Published: 2014-05-07T10:55:04.337+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10Actively ExploitedEPSS 22.48%

Last modified Jun 17, 2026

CVE-2014-0196 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. The n_tty_write function in drivers/tty/n_tty.c in the Linux kernel through 3.14.3 does not properly manage tty driver access in the "LECHO & !OPOST" case, which allows local users to cause a denial of service (memory corruption and system crash) or gain privileges by triggering a race condition involving read and write operations with long strings.. CISA has confirmed active exploitation in the wild. EPSS estimates a 22.48% chance of exploitation in the next 30 days.

Description

The n_tty_write function in drivers/tty/n_tty.c in the Linux kernel through 3.14.3 does not properly manage tty driver access in the "LECHO & !OPOST" case, which allows local users to cause a denial of service (memory corruption and system crash) or gain privileges by triggering a race condition involving read and write operations with long strings.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

22.48%

97.4th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Jun 2, 2023.

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Linux	Linux Kernel	> 2.6.31, < 3.2.59	—
Linux	Linux Kernel	>= 3.3, < 3.4.91	—
Linux	Linux Kernel	>= 3.5, < 3.10.40	—
Linux	Linux Kernel	>= 3.11, < 3.12.20	—
Linux	Linux Kernel	>= 3.13, < 3.14.4	—
Linux	Linux Kernel	2.6.31	—
Debian	Debian Linux	6.0	—
Debian	Debian Linux	7.0	—
Redhat	Enterprise Linux	6.0	—
Redhat	Enterprise Linux Eus	6.3	—
Redhat	Enterprise Linux Eus	6.4	—
Redhat	Enterprise Linux Server Eus	6.3	—
Suse	Suse Linux Enterprise Desktop	11	Sp3
Suse	Suse Linux Enterprise High Availability Extension	11	Sp3
Suse	Suse Linux Enterprise Server	11	Sp3
Oracle	Linux	6	—
Canonical	Ubuntu Linux	10.04	—
Canonical	Ubuntu Linux	12.04	—
Canonical	Ubuntu Linux	12.10	—
Canonical	Ubuntu Linux	13.10	—
Canonical	Ubuntu Linux	14.04	—
F5	Big-Ip 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	Big-Ip 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 Link Controller	>= 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 Module	>= 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-Iq Centralized Management	4.6.0	—
F5	Big-Iq Cloud	>= 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	—
F5	Enterprise Manager	3.1.1	—

References

http://bugzilla.novell.com/show_bug.cgi?id=875690Issue Tracking, Permissions Required, Third Party Advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=4291086b1f081b869c6d79e5b7441633dc3ace00Broken Link
http://linux.oracle.com/errata/ELSA-2014-0771.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00007.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00012.htmlMailing List, Third Party Advisory
http://pastebin.com/raw.php?i=yTSFUBgZExploit, Mailing List, Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2014-0512.htmlThird Party Advisory
http://secunia.com/advisories/59218Not Applicable
http://secunia.com/advisories/59262Broken Link
http://secunia.com/advisories/59599Broken Link
http://source.android.com/security/bulletin/2016-07-01.htmlNot Applicable
http://support.f5.com/kb/en-us/solutions/public/15000/300/sol15319.htmlThird Party Advisory
http://www.debian.org/security/2014/dsa-2926Third Party Advisory
http://www.debian.org/security/2014/dsa-2928Third Party Advisory
http://www.exploit-db.com/exploits/33516Exploit, Third Party Advisory, VDB Entry
http://www.openwall.com/lists/oss-security/2014/05/05/6Mailing List, Third Party Advisory
http://www.osvdb.org/106646Broken Link
http://www.ubuntu.com/usn/USN-2196-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2197-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2198-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2199-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2200-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2201-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2202-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2203-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2204-1Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1094232Issue Tracking, Patch, Third Party Advisory
https://github.com/torvalds/linux/commit/4291086b1f081b869c6d79e5b7441633dc3ace00Exploit, Patch, Third Party Advisory
http://bugzilla.novell.com/show_bug.cgi?id=875690Issue Tracking, Permissions Required, Third Party Advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=4291086b1f081b869c6d79e5b7441633dc3ace00Broken Link
http://linux.oracle.com/errata/ELSA-2014-0771.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00007.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00012.htmlMailing List, Third Party Advisory
http://pastebin.com/raw.php?i=yTSFUBgZExploit, Mailing List, Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2014-0512.htmlThird Party Advisory
http://secunia.com/advisories/59218Not Applicable
http://secunia.com/advisories/59262Broken Link
http://secunia.com/advisories/59599Broken Link
http://source.android.com/security/bulletin/2016-07-01.htmlNot Applicable
http://support.f5.com/kb/en-us/solutions/public/15000/300/sol15319.htmlThird Party Advisory
http://www.debian.org/security/2014/dsa-2926Third Party Advisory
http://www.debian.org/security/2014/dsa-2928Third Party Advisory
http://www.exploit-db.com/exploits/33516Exploit, Third Party Advisory, VDB Entry
http://www.openwall.com/lists/oss-security/2014/05/05/6Mailing List, Third Party Advisory
http://www.osvdb.org/106646Broken Link
http://www.ubuntu.com/usn/USN-2196-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2197-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2198-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2199-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2200-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2201-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2202-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2203-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2204-1Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1094232Issue Tracking, Patch, Third Party Advisory
https://github.com/torvalds/linux/commit/4291086b1f081b869c6d79e5b7441633dc3ace00Exploit, Patch, Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2014-0196US Government Resource

Timeline

Published: May 7, 2014
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2014-0196?

How severe is CVE-2014-0196?

CVE-2014-0196 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 22.48% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2014-0196?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2014-0196?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST