Improper initialization in Linux kernel - CVE-2021-4218

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Main Vulnerability Database Vulnerabilities #VU92744

Improper initialization in Linux kernel - CVE-2021-4218

Published: August 24, 2022 / Updated: August 30, 2022


Vulnerability identifier: #VU92744
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-4218
CWE-ID: CWE-665
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
Linux kernel
Software vendor:
Linux Foundation

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

A flaw was found in the Linux kernel's implementation of reading the SVC RDMA counters. Reading the counter sysctl panics the system. This flaw allows a local attacker with local access to cause a denial of service while the system reboots. The issue is specific to CentOS/RHEL.


Remediation

Install update from vendor's repository.

External links