CVE-2014-0196

CVE-2014-0196 is a medium-severity vulnerability in Redhat Enterprise Linux with a CVSS 3.x base score of 5.5. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2023-05-12). The underlying weakness is classified as CWE-362.

Key facts

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.

Frequently asked questions

What is CVE-2014-0196?
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.
How severe is CVE-2014-0196?
CVE-2014-0196 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2014-0196 being actively exploited?
Yes. CVE-2014-0196 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2023-05-12, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2014-0196?
CVE-2014-0196 primarily affects Redhat Enterprise Linux. In total, 46 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-0196?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2014-0196 have an EU (EUVD) identifier?
Yes. CVE-2014-0196 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2014-0247. It is also flagged as exploited in the EUVD (since 2023-05-12).
When was CVE-2014-0196 published?
CVE-2014-0196 was published on 2014-05-07 and last updated on 2026-06-17.

References

Affected products (46)

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