CVE-2014-0196 (GCVE-0-2014-0196)
Vulnerability from cvelistv5 – Published: 2014-05-07 10:00 – Updated: 2025-10-22 00:05Summary
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.
Severity
5.5 (Medium)
SSVC
Exploitation: active
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-07 13:36 UTC
CWE
- n/a
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
29 references
Date Public
2014-04-29 00:00
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 4459cd35-997e-48e6-ac74-4492acaa8f4e
Exploited: Yes
Timestamps
First Seen: 2023-05-12
Asserted: 2023-05-12
Scope
Notes: KEV entry: Linux Kernel Race Condition Vulnerability | Affected: Linux / Kernel | Description: Linux Kernel contains a race condition vulnerability within the n_tty_write function that allows local users to cause a denial-of-service (DoS) or gain privileges via read and write operations with long strings. | Required action: The impacted product is end-of-life and should be disconnected if still in use. | Due date: 2023-06-02 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://lkml.iu.edu/hypermail/linux/kernel/1609.1/02103.html; https://nvd.nist.gov/vuln/detail/CVE-2014-0196
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-362 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | Kernel |
| Due Date | 2023-06-02 |
| Date Added | 2023-05-12 |
| Vendorproject | Linux |
| Vulnerabilityname | Linux Kernel Race Condition Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-02-02 12:26 UTC
| Updated: 2026-02-06 07:17 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 3e5ecd6b-bd9a-4ae8-96bf-edccbd1cb722
Exploited: Yes
Timestamps
First Seen: 2023-05-12
Asserted: 2023-05-12
Scope
Notes: KEVIntel entry: 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 &... | Affected: Linux / kernel | CVSS: 5.5 (MEDIUM) | Used in malware: unknown | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | 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 &... |
| Vendor | Linux |
| Product | kernel |
| Added Date | 2023-05-12T00:00:00.000Z |
| Cvss Score | 5.5 |
| Epss Score | None |
| Cvss Severity | MEDIUM |
| Epss Percentile | None |
| Used In Malware | unknown |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | False |
References
Created: 2026-06-23 14:05 UTC
| Updated: 2026-07-10 06:14 UTC
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],
"url": "http://www.ubuntu.com/usn/USN-2199-1"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "http://linux.oracle.com/errata/ELSA-2014-0771.html"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1094232"
},
{
"name": "USN-2197-1",
"tags": [
"vendor-advisory",
"x_refsource_UBUNTU"
],
"url": "http://www.ubuntu.com/usn/USN-2197-1"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "http://source.android.com/security/bulletin/2016-07-01.html"
},
{
"name": "RHSA-2014:0512",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "http://rhn.redhat.com/errata/RHSA-2014-0512.html"
},
{
"name": "59599",
"tags": [
"third-party-advisory",
"x_refsource_SECUNIA"
],
"url": "http://secunia.com/advisories/59599"
},
{
"name": "DSA-2926",
"tags": [
"vendor-advisory",
"x_refsource_DEBIAN"
],
"url": "http://www.debian.org/security/2014/dsa-2926"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/torvalds/linux/commit/4291086b1f081b869c6d79e5b7441633dc3ace00"
},
{
"name": "SUSE-SU-2014:0667",
"tags": [
"vendor-advisory",
"x_refsource_SUSE"
],
"url": "http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00007.html"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "http://pastebin.com/raw.php?i=yTSFUBgZ"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=4291086b1f081b869c6d79e5b7441633dc3ace00"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "http://bugzilla.novell.com/show_bug.cgi?id=875690"
},
{
"name": "USN-2198-1",
"tags": [
"vendor-advisory",
"x_refsource_UBUNTU"
],
"url": "http://www.ubuntu.com/usn/USN-2198-1"
},
{
"name": "USN-2200-1",
"tags": [
"vendor-advisory",
"x_refsource_UBUNTU"
],
"url": "http://www.ubuntu.com/usn/USN-2200-1"
},
{
"name": "USN-2201-1",
"tags": [
"vendor-advisory",
"x_refsource_UBUNTU"
],
"url": "http://www.ubuntu.com/usn/USN-2201-1"
},
{
"name": "USN-2196-1",
"tags": [
"vendor-advisory",
"x_refsource_UBUNTU"
],
"url": "http://www.ubuntu.com/usn/USN-2196-1"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"assignerShortName": "redhat",
"cveId": "CVE-2014-0196",
"datePublished": "2014-05-07T10:00:00.000Z",
"dateReserved": "2013-12-03T00:00:00.000Z",
"dateUpdated": "2025-10-22T00:05:37.666Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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