#VU67913 Memory leak in Linux kernel - CVE-2021-4159 

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Main Vulnerability Database Vulnerabilities #VU67913

#VU67913 Memory leak in Linux kernel - CVE-2021-4159

Published: October 5, 2022


Vulnerability identifier: #VU67913
Vulnerability risk: 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-2021-4159
CWE-ID: CWE-401
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.

The vulnerability exists due memory leak in Linux kernel EBPF verifier when handling internal data structures. A local user with permissions to insert eBPF code to the kernel can force the kernel to leak internal kernel memory details and bypass mitigations, related to exploitation protection.


Remediation

Install updates from vendor's website.

External links