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CVE-2021-29626

CVE information

Published

2 years ago

Last Modified

1 year ago

CVSSv2.0 Severity

Low

CVSSv3.1 Severity

Medium

Impact Analysis

Description

In FreeBSD 13.0-STABLE before n245117, 12.2-STABLE before r369551, 11.4-STABLE before r369559, 13.0-RC5 before p1, 12.2-RELEASE before p6, and 11.4-RELEASE before p9, copy-on-write logic failed to invalidate shared memory page mappings between multiple processes allowing an unprivileged process to maintain a mapping after it is freed, allowing the process to read private data belonging to other processes or the kernel..

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:freebsd:freebsd:11.4:beta1:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:freebsd:freebsd:11.4:-:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:freebsd:freebsd:11.4:rc2:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:freebsd:freebsd:11.4:rc1:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:freebsd:freebsd:11.4:p1:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:freebsd:freebsd:11.4:p3:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:freebsd:freebsd:11.4:p2:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:freebsd:freebsd:12.2:p1:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:freebsd:freebsd:12.2:p2:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:freebsd:freebsd:12.2:-:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*
  Yes
- 11.4
cpe:2.3:o:freebsd:freebsd:11.4:p4:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:freebsd:freebsd:11.4:p5:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:freebsd:freebsd:13.0:rc5:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:freebsd:freebsd:13.0:rc1:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:freebsd:freebsd:13.0:rc2:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:freebsd:freebsd:13.0:rc4:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:freebsd:freebsd:13.0:beta1:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:freebsd:freebsd:13.0:beta2:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:freebsd:freebsd:13.0:beta3:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:freebsd:freebsd:13.0:beta4:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:freebsd:freebsd:13.0:rc3:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*
  Yes
12.0 12.2