Linux Kernel Race Condition Vulnerability

CheckOps priority index

4.6/10 Patch within 7 days

Severity5.5

Probability2.0

Exploitation3/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 20.3% higher than 97.5% of CVEs

CVSS 3.1 5.5 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:

Exploited for 1,271 days 12 May 2023

CISA due date 02 Jun 2023 for US federal agencies

Exploitation probability EPSS · FIRST

EPSS probability (%)Percentile among all CVEs

Exploitation signals 3 / 5

KEV catalog (CISA)12 May 2023
Exploited in EUVD (ENISA)12 May 2023
Used by ransomwareno
EPSS above 10 %20.3%
No account, over the networkno

What to do

Fix

Update to a fixed version: 3.14.4-1

CISA guidance: The impacted product is end-of-life and should be disconnected if still in use.

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Description ENISA EUVD

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.

Affected products

Kernel

Weaknesses (CWE)

CWE-362

Open source packages OSV

linuxDebian:12 · CVE-2014-0196
fixed in 3.14.4-1
linuxDebian:13 · CVE-2014-0196
fixed in 3.14.4-1

Timeline

07 May 2014
Published
12 May 2023
Exploitation reported (ENISA)
12 May 2023
Added to the KEV catalog
02 Jun 2023
CISA remediation due date
26 Sept 2026
EPSS peak: 22.5%

Other exploited vulnerabilities from the same vendor

CVE-2026-46300Linux Kernel Missing Initialization of a Variable Vulnerability
5.4 · Rising fast
CVE-2026-53266Linux Kernel Out-of-Bounds Write Vulnerability
4.7 · Actively exploited
CVE-2025-39964Linux Kernel Race Condition Vulnerability
4.4 · Actively exploited
CVE-2025-39682Linux Kernel Improper Check for Unusual or Exceptional Conditions Vulnerability
5.8 · Actively exploited
CVE-2026-53362Linux Kernel Unspecified Vulnerability
4.3 · Actively exploited
CVE-2022-0995Linux Kernel Out-of-Bounds Write Vulnerability
4.6 · Actively exploited