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LIN1021-1052 : Security Advisory - linux - CVE-2021-3679 (trace)

Created: Aug 4, 2021    Updated: Aug 22, 2021
Resolved Date: Aug 22, 2021
Found In Version: 10.21.20.1
Fix Version: 10.21.20.2
Severity: Standard
Applicable for: Wind River Linux LTS 21
Component/s: Kernel

Description

A lack of CPU resource in the Linux kernel tracing module functionality in versions prior to 5.14-rc3 was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service.

https://nvd.nist.gov/vuln/detail/CVE-2021-3679

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