CVE-2018-18386

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.

Category

3.3
CVSS
Severity: Low
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.09%
Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://usn.ubuntu.com/3849-1/ third party advisory vendor advisory
https://bugzilla.suse.com/show_bug.cgi?id=1094825 issue tracking third party advisory patch
https://usn.ubuntu.com/3849-2/ third party advisory vendor advisory
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.11 release notes third party advisory patch
https://github.com/torvalds/linux/commit/966031f340185eddd05affcf72b740549f056348 third party advisory patch
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=966031f340185eddd05affcf72b740549f056348 patch vendor advisory
https://access.redhat.com/errata/RHSA-2019:0831 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-18386?
CVE-2018-18386 has been scored as a low severity vulnerability.
How to fix CVE-2018-18386?
To fix CVE-2018-18386, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-18386 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-18386 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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