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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 …

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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.
CVSS 5.5 (MEDIUM) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
7.9/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 5.5: +0.82
  • Fresh EPSS: 20.33%: +0.10

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 10 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

Hacker News
Press · 04 Jun 2014, 05:58 · Exploiting CVE-2014-0196 a walk-through of the Linux pty race condition PoC
Hacker News
Press · 12 May 2014, 22:48 · Linux Kernel up to v3.15-rc4 local privilege escalation exploit
Hacker News
Press · 12 May 2014, 20:01 · CVE-2014-0196 – Local Linux DoS Vulnerability
Hacker News
Press · 12 May 2014, 16:29 · CVE-2014-0196 Linux
Hacker News
Press · 12 May 2014, 13:47 · Linux kernel vulnerability | local user to root
See all 10 source documents
Hacker News
Press · 06 May 2014, 08:35 · OpenSSL CVE-2010-5298 / CVE-2014-0198
Hacker News
Press · 09 Apr 2014, 18:56 · Google Services Updated to Address OpenSSL CVE-2014-0160 (the Heartbleed bug)
Hacker News
Press · 09 Apr 2014, 08:43 · Amazon EC2 CVE-2014-0160 Customer Security Notice
Hacker News
Press · 07 Apr 2014, 23:46 · Amazon Elastic Load Balancers are affected by CVE-2014-0160/Heartbleed
Hacker News
Press · 07 Apr 2014, 22:45 · OpenSSL bug CVE-2014-0160 – Torproject Advisory

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 7.9 (2026-11-02 15:12). The curve appears once the score changes.

Public exploit evidence

1

Public exploit entries / repo candidates

Source entries and unverified repository candidates are counted separately.

Public exploit evidence
Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 5.5; EPSS 20.3%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
local access, low privileges, no user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:57:34.453459+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
First press mention
07 Apr 2014, 22:45
Published
07 May 2014, 10:00
Latest press mention
04 Jun 2014, 05:58
Added to the CISA KEV catalog
12 May 2023, 00:00
Score calculated
05 Nov 2026, 13:57
PoCs on GitHub
1 repositories