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CVE-2018-18386 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:3.3 LOWVector:CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=966031f340185eddd05affcf72b740549f056348	CVE	PatchVendor Advisory
https://access.redhat.com/errata/RHSA-2019:0831	CVE
https://bugzilla.suse.com/show_bug.cgi?id=1094825	CVE	Issue TrackingPatchThird Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.11	CVE	PatchRelease NotesThird Party Advisory
https://github.com/torvalds/linux/commit/966031f340185eddd05affcf72b740549f056348	CVE	PatchThird Party Advisory
https://usn.ubuntu.com/3849-1/	CVE	Third Party Advisory
https://usn.ubuntu.com/3849-2/	CVE	Third Party Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=966031f340185eddd05affcf72b740549f056348	[email protected]	PatchVendor Advisory
https://access.redhat.com/errata/RHSA-2019:0831	[email protected]
https://bugzilla.suse.com/show_bug.cgi?id=1094825	[email protected]	Issue TrackingPatchThird Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.11	[email protected]	PatchRelease NotesThird Party Advisory
https://github.com/torvalds/linux/commit/966031f340185eddd05affcf72b740549f056348	[email protected]	PatchThird Party Advisory
https://usn.ubuntu.com/3849-1/	[email protected]	Third Party Advisory
https://usn.ubuntu.com/3849-2/	[email protected]	Third Party Advisory

see all 14 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-704	Incorrect Type Conversion or Cast	[email protected]

Affected Products

Product	Versions
linux linux kernel	< 4.14.11
CPE cpe:2.3:o:linux:linux_kernel:::::::: Remediation No remediation found in references.
canonical ubuntu linux	12.04 14.04
CPE cpe:2.3:o:canonical:ubuntu_linux:12.04::::esm::: cpe:2.3:o:canonical:ubuntu_linux:14.04::::lts::: Remediation No remediation found in references.

Change History

8 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Apr 23, 2019	CVE Modified	[email protected]
Mar 7, 2019	Modified Analysis	[email protected]
Jan 15, 2019	CVE Modified	[email protected]
Dec 21, 2018	CVE Modified	[email protected]
Dec 6, 2018	Initial Analysis	[email protected]