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CVE-2021-3679

CVE information

Published

2 years ago

Last Modified

1 year ago

CVSSv2.0 Severity

Low

CVSSv3.1 Severity

Medium

Impact Analysis

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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..

CVSSv2.0 Score

Severity
Low
Base Score
2.1/10
Exploit Score
3.9/10
Access Vector
Local
Access Complexity
Low
Authentication Required
None
Impact Score
2.9/10
Confidentiality Impact
None
Availability Impact
Partial
Integrity Impact
None

CVSSv3.1 Score

Severity
Medium
Base Score
5.5/10
Exploit Score
1.8/10
Access Vector
Local
Access Complexity
Low
Privileges Required
Low
Impact Score
3.6/10
Confidentiality Impact
None
Availability Impact
High
Integrity Impact
None
Scope
Unchanged
User Interaction
None

Products Affected

CPE Affected Vulnerable Excluding Edit
cpe:2.3:o:linux:linux_kernel:5.14:rc1:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:linux:linux_kernel:5.14:rc2:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:linux:linux_kernel:5.14:-:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  Yes
- 5.14
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:*
  Yes
- -
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
  Yes
- -

References