#VU56017 Out-of-bounds write in Linux kernel - CVE-2021-22555 

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU56017

#VU56017 Out-of-bounds write in Linux kernel - CVE-2021-22555

Published: August 20, 2021 / Updated: February 8, 2024


Vulnerability identifier: #VU56017
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Clear
CVE-ID: CVE-2021-22555
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability: The vulnerability is being exploited in the wild
Vulnerable software:
Linux kernel
Software vendor:
Linux Foundation

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error when processing untrusted input in net/netfilter/x_tables.c in Linux kernel. A local user can run a specially crafted program to trigger an out-of-bounds write and execute arbitrary code with elevated privileges.


Remediation

Install updates from vendor's website.

External links