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Actively exploited · Published May 7, 2014 · Assigned by redhat

CVE-2014-0196

Medium 5.5 Exploited

In plain English

A medium-severity race condition in Kernel from Linux. Attackers are actively exploiting it in the wild (listed by CISA on May 12, 2023). The chance it is exploited in the next 30 days is estimated at 20.3% (higher than 97% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)20.3%top 2.5% of all CVEs
Exploited in the wildYesCISA KEV since May 12, 2023
Attack tooling1Public PoC

CISA guidance

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

Federal agencies must remediate by Jun 2, 2023.

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux3.14.4-1DEBIAN-CVE-2014-0196
Debian:13linux3.14.4-1DEBIAN-CVE-2014-0196
Debian:14linux3.14.4-1DEBIAN-CVE-2014-0196

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

Weakness: CWE-362 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References