Linux Kernel Improper Input Validation Vulnerability

Technical Severity

CVSS v3.1 Metrics

HIGH

8.8 / 10

Minimal Risk Critical

Vector Specification

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitation Likelihood

EPSS Prediction

68.10 %

Predictive Probability

Percentile Rank

98.6 th

Documented as more likely to be exploited than 98.6% of known CVEs.

Detection Date

Sep 15, 2022

Remediation Due

Oct 06, 2022

CISA Catalog Active

Threat Analysis

The get_user and put_user API functions of the Linux kernel fail to validate the target address when being used on ARM v6k/v7 platforms. This allows an application to read and write kernel memory which could lead to privilege escalation.

Remediation Directive

Apply updates per vendor instructions.

External Intelligence

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8404663f81d212918ff85f493649a7991209fa04

NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2013-6282