Memory corruption in Linux kernel - CVE-2021-20239

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Main Vulnerability Database Vulnerabilities #VU92759

Memory corruption in Linux kernel - CVE-2021-20239

Published: May 28, 2021 / Updated: August 5, 2022


Vulnerability identifier: #VU92759
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-20239
CWE-ID: CWE-119
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 gain access to sensitive information.

A flaw was found in the Linux kernel in versions before 5.4.92 in the BPF protocol. This flaw allows an attacker with a local account to leak information about kernel internal addresses. The highest threat from this vulnerability is to confidentiality.


Remediation

Install update from vendor's repository.

External links