01 Record

CVE-2018-18386

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

UnratedPUBLISHEDCNA: mitre

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 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

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 0.41% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 34.3% of scored records. A rank, not a probability.
NVD base score: 3.3 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
NVD analysis status: Modified. NVD last modified this record on 2026-06-17.
Red Hat severity: Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2018-10-17 20:00Z7 YR AGO

Last updated

2024-08-05 11:08Z2 YR AGO

Reserved

2018-10-16

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-704Incorrect Type Conversion or CastClass
CWE-843Access of Resource Using Incompatible Type ('Type Confusion')Base

Data version

5.1

Document digest

3801e4e7e24fccde9088d11ba978f348da9c178ca37179bd6513d804cfb55836

05 Affected products

VendorProductVersionsPlatforms

canonicalubuntu_linuxNot specified—

linuxlinux_kernelNot specified—

redhatenterprise_linuxNot specified—

redhatenterprise_mrgNot specified—

06 References

usn.ubuntu.comUSN-3849-1https://usn.ubuntu.com/3849-1/vendor-advisoryx_refsource_UBUNTU
bugzilla.suse.comhttps://bugzilla.suse.com/show_bug.cgi?id=1094825x_refsource_MISC
usn.ubuntu.comUSN-3849-2https://usn.ubuntu.com/3849-2/vendor-advisoryx_refsource_UBUNTU
cdn.kernel.orghttps://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.11x_refsource_MISC
github.comhttps://github.com/torvalds/linux/commit/966031f340185eddd05affcf72b740549f056348x_refsource_MISC
git.kernel.orghttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=966031f340185eddd05affcf72b740549f056348x_refsource_MISC
access.redhat.comRHSA-2019:0831https://access.redhat.com/errata/RHSA-2019:0831vendor-advisoryx_refsource_REDHAT

01 Record index

CVE-2018-18386

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2018-18386

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References