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CVE-2021-35039

CVE information

Published

2 years ago

Last Modified

10 months ago

CVSSv2.0 Severity

Medium

CVSSv3.1 Severity

High

Impact Analysis

Description

kernel/module.c in the Linux kernel before 5.12.14 mishandles Signature Verification, aka CID-0c18f29aae7c. Without CONFIG_MODULE_SIG, verification that a kernel module is signed, for loading via init_module, does not occur for a module.sig_enforce=1 command-line argument..

CVSSv2.0 Score

Severity
Medium
Base Score
6.9/10
Exploit Score
3.4/10
Access Vector
Local
Access Complexity
Medium
Authentication Required
None
Impact Score
10/10
Confidentiality Impact
Complete
Availability Impact
Complete
Integrity Impact
Complete

CVSSv3.1 Score

Severity
High
Base Score
7.8/10
Exploit Score
1.8/10
Access Vector
Local
Access Complexity
Low
Privileges Required
Low
Impact Score
5.9/10
Confidentiality Impact
High
Availability Impact
High
Integrity Impact
High
Scope
Unchanged
User Interaction
None

Products Affected

CPE Affected Vulnerable Excluding Edit
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  Yes
4.15 4.19.196
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  Yes
4.20 5.4.129
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  Yes
5.5 5.10.47
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  Yes
5.11 5.12.14
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  Yes
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