CVE-2018-18386

low-risk
Published 2018-10-17

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.

Do I need to act?

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0.04% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
3
CVSS 3.3/10 Low
LOCAL / LOW complexity

Affected Products (3)

Affected Vendors

Linux Canonical

References (14)

Patch http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=966031...
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/966031f340185eddd05affcf72b740549f05634...
Third Party Advisory https://usn.ubuntu.com/3849-1/
Third Party Advisory https://usn.ubuntu.com/3849-2/
Patch http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=966031...
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/966031f340185eddd05affcf72b740549f05634...
Third Party Advisory https://usn.ubuntu.com/3849-1/
Third Party Advisory https://usn.ubuntu.com/3849-2/
22
/ 100
low-risk
Severity 13/34 · Low
Exploitability 0/34 · Minimal
Exposure 9/34 · Low