#VU63664 Resource exhaustion in Linux kernel - CVE-2021-3679 

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Main Vulnerability Database Vulnerabilities #VU63664

#VU63664 Resource exhaustion in Linux kernel - CVE-2021-3679

Published: May 25, 2022


Vulnerability identifier: #VU63664
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-3679
CWE-ID: CWE-400
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.

The vulnerability exists due to lack of CPU resource in the Linux kernel tracing module functionality when using trace ring buffer in a specific way. A privileged local user (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service.


Remediation

Install updates from vendor's website.

External links