CVE-2021-29626

Common vulnerabilities & exposures (CVE)

CVE database CVE database blogpost Release & EoL database

Published at: - 07-04-2021 05:15

Last modified: - 27-05-2022 03:22

Total changes: - 5

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Low

Attack complexity

Local

Attack vector

None

Availability

High

Confidentiality

None

Integrity

Low

Privileges required

Unchanged

Scope

None

User interaction

5.5

Base score

1.8

3.6

Exploitability score

Impact score

Verification logic

vendor=freebsd AND product=freebsd AND version=11.4 AND update=beta1

vendor=freebsd AND product=freebsd AND version=11.4 AND update=-

vendor=freebsd AND product=freebsd AND version=11.4 AND update=rc2

vendor=freebsd AND product=freebsd AND version=11.4 AND update=rc1

vendor=freebsd AND product=freebsd AND version=11.4 AND update=p1

vendor=freebsd AND product=freebsd AND version=11.4 AND update=p3

vendor=freebsd AND product=freebsd AND version=11.4 AND update=p2

vendor=freebsd AND product=freebsd AND version=12.2 AND update=p1

vendor=freebsd AND product=freebsd AND version=12.2 AND update=p2

vendor=freebsd AND product=freebsd AND version=12.2 AND update=-

vendor=freebsd AND product=freebsd AND versionEndExcluding=11.4

vendor=freebsd AND product=freebsd AND version=11.4 AND update=p4

vendor=freebsd AND product=freebsd AND version=11.4 AND update=p5

vendor=freebsd AND product=freebsd AND versionStartIncluding=12.0 AND versionEndExcluding=12.2

vendor=freebsd AND product=freebsd AND version=13.0 AND update=beta1

vendor=freebsd AND product=freebsd AND version=13.0 AND update=beta2

vendor=freebsd AND product=freebsd AND version=13.0 AND update=beta3

vendor=freebsd AND product=freebsd AND version=13.0 AND update=beta4

vendor=freebsd AND product=freebsd AND version=13.0 AND update=rc1

vendor=freebsd AND product=freebsd AND version=13.0 AND update=rc2

vendor=freebsd AND product=freebsd AND version=13.0 AND update=rc3

vendor=freebsd AND product=freebsd AND version=13.0 AND update=rc4

vendor=freebsd AND product=freebsd AND version=13.0 AND update=rc5

Reference

Keywords

CVE-2021-29626

Common vulnerabilities & exposures (CVE)

Description

Common Vulnerability Scoring System (CVSS)

Verification logic

Reference

NVD

CVE-2021-29626

CVE

Common vulnerabilities & exposures

CVSS

Common vulnerability scoring system

Security

Vulnerabilities

Exposures