Low severity · published Oct 17, 2018
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…
3.3
CVSS
0.4%
EPSS
No
On KEV
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 vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
before 4.14.11 · source: NVD
UL
Ubuntu Linux · Canonical
12.04; 14.04 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-18386
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-18386
Patch
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=966031f340185eddd05affcf72b740549f056348
access.redhat.com
https://access.redhat.com/errata/RHSA-2019:0831
Issue Tracking
https://bugzilla.suse.com/show_bug.cgi?id=1094825
Patch
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.11
Patch
https://github.com/torvalds/linux/commit/966031f340185eddd05affcf72b740549f056348
Third Party Advisory
https://usn.ubuntu.com/3849-1/
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