3.3

CVE-2018-18386: canonical ubuntu_linux Incorrect Type Conversion or Cast

Modified
AliasesSUSE-SU-2018:3772-1UBUNTU-CVE-2018-18386DEBIAN-CVE-2018-18386
Published 17-10-2018Last modified 05-08-2024

Vulnerability summary

CVE-2018-18386 is a low (CVSS 3.3) Incorrect Type Conversion or Cast vulnerability in canonical ubuntu_linux. EPSS estimates a 0.41% chance of exploitation in the next 30 days, higher than 35.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 3.3, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
3.3/10
010
Low · v3.0 (NVD)
EPSS score
0.41%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 21 · Related 20
RHSA-2019:0831SUSE-SU-2018:3589-1SUSE-SU-2018:3593-1SUSE-SU-2018:3659-1SUSE-SU-2018:3688-1SUSE-SU-2018:3689-1

Timeline

  1. 17-10-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.41%

Chance of exploitation in the next 30 days

Percentile

36%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.41% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Suse20 products
  • kgraft-patch-SLE12_Update_29&distro=SUSE Linux Enterprise Server 12-LTSS< 11-2.1
  • kgraft-patch-SLE12_Update_30&distro=SUSE Linux Enterprise Server 12-LTSS< 10-2.1
  • kgraft-patch-SLE12_Update_31&distro=SUSE Linux Enterprise Server 12-LTSS< 10-2.1
  • kgraft-patch-SLE12_Update_32&distro=SUSE Linux Enterprise Server 12-LTSS< 10-2.1
  • kgraft-patch-SLE12_Update_33&distro=SUSE Linux Enterprise Server 12-LTSS< 9-2.1
Ubuntu16 products
  • linux< 3.13.0-164.214 | < 4.4.0-119.143
  • linux-aws< 4.4.0-1016.16 | < 4.4.0-1054.63
  • linux-azure< 4.15.0-1013.13~16.04.2
  • linux-azure-fdeAll versions (No fix recorded)
  • linux-fips< 4.4.0-1008.10
Canonical1 product
Debian1 product
  • linux< 4.14.12-1
Linux1 product

5 vendors · 39 products

References

15 links
Show all 15 references