Is CVE-2018-18386 in the CISA KEV catalog?

No. CVE-2018-18386 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-18386?

CVE-2018-18386 has a CVSS v3 base score of 3.3 (LOW).

What is the EPSS score for CVE-2018-18386?

CVE-2018-18386 has an EPSS score of 0.41% (33th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-18386?

Upgrade linux on debian 11 to 4.14.12-1 or later. Fixes are available for 10 affected products.

CVE & CISA-KEV Catalog

CVE-2018-18386

LOW

3.3

CVSS v3

NVD

Description

drivers/tty/n_tty.c in the Linux kernel before 4.14.11 allows local attackers (who are able to access pseudo terminals) to hang/block further usage of any pseudo terminal devices due to an EXTPROC versus ICANON confusion in TIOCINQ.

CWE-704

How to fix

Remediation Available

linuxDebian

Fixed in:4.14.12-1CVE-2018-18386

linuxUbuntu

Fixed in:3.13.0-164.214USN-3849-1

linux-image-3.13.0-164-genericUbuntu

Fixed in:3.13.0-164.214USN-3849-1

linux-image-3.13.0-164-generic-lpaeUbuntu

Fixed in:3.13.0-164.214USN-3849-1

linux-image-3.13.0-164-lowlatencyUbuntu

Fixed in:3.13.0-164.214USN-3849-1

linux-image-3.13.0-164-powerpc-e500Ubuntu

Fixed in:3.13.0-164.214USN-3849-1

linux-image-3.13.0-164-powerpc-e500mcUbuntu

Fixed in:3.13.0-164.214USN-3849-1

linux-image-3.13.0-164-powerpc-smpUbuntu

Fixed in:3.13.0-164.214USN-3849-1

linux-image-3.13.0-164-powerpc64-embUbuntu

Fixed in:3.13.0-164.214USN-3849-1

linux-image-3.13.0-164-powerpc64-smpUbuntu

Fixed in:3.13.0-164.214USN-3849-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Exploit Intelligence

0.41%probability of exploitation in 30 days

33rdpercentile

Low risk: more likely to be exploited than 33% of all known CVEs.

References

Patch4

Third-Party Advisory2

Other references1

access.redhat.com

Related Vulnerabilities

Other CWE-704 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-41646	Critical	9.8	41%	-	Fix
CVE-2017-5115	High	8.8	26%	-	Fix
CVE-2018-12453	High	7.5	24%	-	Fix
CVE-2018-3843	High	8.8	24%	-	-
CVE-2017-3106	High	8.8	22%	-	-
CVE-2018-5007	High	8.8	18%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.