CVE-2018-18021

Public on 2018-11-05
Modified on 2018-11-08
Description
A vulnerability was discovered in the Linux kernel that allows an attacker to escalate privileges with using a 64-bit ARM architecture. A local attacker with permission to create KVM-based virtual machines can both panic the hypervisor by triggering an illegal exception return (resulting in a DoS) and to redirect execution elsewhere within the hypervisor with full register control, instead of causing a return to the guest.
Severity
Important
CVSS v3 Base Score
6.7
See breakdown

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 kernel 2018-11-07 21:58 ALAS2-2018-1100
Amazon Linux 1 kernel 2018-11-05 19:47 ALAS-2018-1100

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 6.7 CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD CVSSv2 3.6 AV:L/AC:L/Au:N/C:N/I:P/A:P
NVD CVSSv3 7.1 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H