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CVE-2020-10766

CVE information

Published

3 years ago

Last Modified

5 months ago

CVSSv2.0 Severity

Low

CVSSv3.1 Severity

Medium

Impact Analysis

Description

A logic bug flaw was found in Linux kernel before 5.8-rc1 in the implementation of SSBD. A bug in the logic handling allows an attacker with a local account to disable SSBD protection during a context switch when additional speculative execution mitigations are in place. This issue was introduced when the per task/process conditional STIPB switching was added on top of the existing SSBD switching. The highest threat from this vulnerability is to confidentiality..

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
Partial
Availability Impact
None
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
High
Availability Impact
None
Integrity Impact
None
Scope
Unchanged
User Interaction
None

Products Affected

CPE Affected Vulnerable Excluding Edit
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  Yes
- 5.8.0