CVE-2014-0196
Summary
| CVE | CVE-2014-0196 |
|---|---|
| State | PUBLISHED |
| Assigner | redhat |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2014-05-07 10:55:04 UTC |
| Updated | 2026-04-21 20:07:27 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 5.5 MEDIUM from ADP
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS: 0.224750000 probability, percentile 0.974590000 (date 2026-07-22)
CISA KEV: Listed on 2023-05-12; due 2023-06-02; ransomware use Unknown
Problem Types: CWE-362 | n/a | CWE-362 CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | ADP | DECLARED | 5.5 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | Secondary | 5.5 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| 2.0 | [email protected] | Primary | 6.9 | AV:L/AC:M/Au:N/C:C/I:C/A:C |
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v2.0 Breakdown
Access Vector
LocalAccess Complexity
MediumAuthentication
NoneConfidentiality
CompleteIntegrity
CompleteAvailability
CompleteAV:L/AC:M/Au:N/C:C/I:C/A:C
CISA Known Exploited Vulnerability
| Vendor | Linux |
|---|---|
| Product | Kernel |
| Name | Linux Kernel Race Condition Vulnerability |
| Required Action | The impacted product is end-of-life and should be disconnected if still in use. |
| Notes | https://lkml.iu.edu/hypermail/linux/kernel/1609.1/02103.html; https://nvd.nist.gov/vuln/detail/CVE-2014-0196 |
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Linux | Linux Kernel | All | All | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| linux.oracle.com | ELSA-2014-0771 - kernel security and bug fix update | af854a3a-2127-422b-91ae-364da2661108 | linux.oracle.com | Third Party Advisory |
| Debian -- Security Information -- DSA-2926-1 linux | af854a3a-2127-422b-91ae-364da2661108 | www.debian.org | Third Party Advisory |
| USN-2198-1: Linux kernel vulnerability | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | Third Party Advisory |
| kernel/git/torvalds/linux.git - Linux kernel source tree | af854a3a-2127-422b-91ae-364da2661108 | git.kernel.org | Broken Link |
| Security Advisory SA59262 - Oracle Linux update for kernel - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Broken Link |
| Red Hat Customer Portal | af854a3a-2127-422b-91ae-364da2661108 | rhn.redhat.com | Third Party Advisory |
| Bug 1094232 – CVE-2014-0196 kernel: pty layer race condition leading to memory corruption | af854a3a-2127-422b-91ae-364da2661108 | bugzilla.redhat.com | Issue Tracking, Patch, Third Party Advisory |
| [security-announce] SUSE-SU-2014:0683-1: important: Security update for | af854a3a-2127-422b-91ae-364da2661108 | lists.opensuse.org | Mailing List, Third Party Advisory |
| USN-2200-1: Linux kernel (Raring HWE) vulnerability | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | Third Party Advisory |
| n_tty: Fix n_tty_write crash when echoing in raw mode · torvalds/linux@4291086 · GitHub | af854a3a-2127-422b-91ae-364da2661108 | github.com | Exploit, Patch, Third Party Advisory |
| USN-2196-1: Linux kernel vulnerability | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | Third Party Advisory |
| Android Security Bulletin—July 2016 | Android Open Source Project | af854a3a-2127-422b-91ae-364da2661108 | source.android.com | Not Applicable |
| Security Advisory SA59218 - F5 Multiple Products Linux Kernel "n_tty_write()" Race Condition Vulnerability - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Not Applicable |
| oss-security - CVE-2014-0196: Linux kernel pty layer race condition memory corruption | af854a3a-2127-422b-91ae-364da2661108 | www.openwall.com | Mailing List, Third Party Advisory |
| [security-announce] SUSE-SU-2014:0667-1: important: Security update for | af854a3a-2127-422b-91ae-364da2661108 | lists.opensuse.org | Mailing List, Third Party Advisory |
| USN-2202-1: Linux kernel vulnerability | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | Third Party Advisory |
| support.f5.com/kb/en-us/solutions/public/15000/300/sol15319.html | af854a3a-2127-422b-91ae-364da2661108 | support.f5.com | Third Party Advisory |
| www.osvdb.org/106646 | af854a3a-2127-422b-91ae-364da2661108 | www.osvdb.org | Broken Link |
| USN-2197-1: Linux kernel (EC2) vulnerability | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | Third Party Advisory |
| USN-2204-1: Linux kernel vulnerability | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | Third Party Advisory |
| Bug 875690 – VUL-0: CVE-2014-0196: kernel: memory corruption via a race in pty write handling | af854a3a-2127-422b-91ae-364da2661108 | bugzilla.novell.com | Issue Tracking, Permissions Required, Third Party Advisory |
| Security Advisory SA59599 - Ubuntu update for kernel - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Broken Link |
| USN-2203-1: Linux kernel vulnerability | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | Third Party Advisory |
| pastebin.com/raw.php | af854a3a-2127-422b-91ae-364da2661108 | pastebin.com | Exploit, Mailing List, Third Party Advisory |
| Linux kernel 3.14-rc1 <= 3.15-rc4 - Raw Mode PTY Local Echo Race Condition (x64) Local Privilege Escalation | af854a3a-2127-422b-91ae-364da2661108 | www.exploit-db.com | Exploit, Third Party Advisory, VDB Entry |
| Debian -- Security Information -- DSA-2928-1 linux-2.6 | af854a3a-2127-422b-91ae-364da2661108 | www.debian.org | Third Party Advisory |
| USN-2199-1: Linux kernel (Quantal HWE) vulnerability | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | Third Party Advisory |
| www.cisa.gov/known-exploited-vulnerabilities-catalog | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | www.cisa.gov | US Government Resource |
| USN-2201-1: Linux kernel (Saucy HWE) vulnerability | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | Third Party Advisory |
| kernel/git/torvalds/linux.git - Linux kernel source tree | MITRE | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
| CISA Known Exploited Vulnerabilities catalog | CISA | www.cisa.gov | kev |
No vendor comments have been submitted for this CVE.
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| ADP | 2023-05-12T00:00:00.000Z | CVE-2014-0196 added to CISA KEV |
There are currently no legacy QID mappings associated with this CVE.