CVE-2018-18386

low

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.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=966031f340185eddd05affcf72b740549f056348

https://access.redhat.com/errata/RHSA-2019:0831

https://bugzilla.suse.com/show_bug.cgi?id=1094825

https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.11

https://github.com/torvalds/linux/commit/966031f340185eddd05affcf72b740549f056348

https://usn.ubuntu.com/3849-1/

https://usn.ubuntu.com/3849-2/

Details

Source: MITRE

Published: 2018-10-17

Updated: 2019-04-23

Type: CWE-704

Risk Information

CVSS v2

Base Score: 2.1

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3

Base Score: 3.3

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Impact Score: 1.4

Exploitability Score: 1.8

Severity: LOW