CVE-2021-43395 - Vulnerability Details - OpenCVE

An issue was discovered in illumos before f859e7171bb5db34321e45585839c6c3200ebb90, OmniOS Community Edition r151038, OpenIndiana Hipster 2021.04, and SmartOS 20210923. A local unprivileged user can cause a deadlock and kernel panic via crafted rename and rmdir calls on tmpfs filesystems. Oracle Solaris 10 and 11 is also affected.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation poc

Automatable no

Technical Impact partial

Vendors	Products
Illumos	Illumos
Joyent	Smartos
Omniosce	Omnios
Openindiana	Openindiana
Oracle	Solaris

Configuration 1 [-]

cpe:2.3:o:illumos:illumos:*:*:*:*:*:*:*:*

Configuration 2 [-]

cpe:2.3:o:omniosce:omnios:r151038:*:*:*:community:*:*:*

Configuration 3 [-]

cpe:2.3:o:openindiana:openindiana:hipster_2021.04:*:*:*:*:*:*:*

Configuration 4 [-]

cpe:2.3:o:joyent:smartos:20210923:*:*:*:*:*:*:*

Configuration 5 [-]

OR	cpe:2.3:o:oracle:solaris:10:::::::*
	cpe:2.3:o:oracle:solaris:11:::::::*

No data.

References

Link	Providers
http://www.tribblix.org/relnotes.html
https://github.com/illumos/illumos-gate/blob/069654420de4aade43c63c43cd2896e66945fc8a/usr/src/uts/common/fs/tmpfs/tmp_vnops.c
https://github.com/illumos/illumos-gate/blob/b3403853e80914bd0aade9b5b605da4878078173/usr/src/uts/common/fs/tmpfs/tmp_dir.c
https://github.com/illumos/illumos-gate/commit/f859e7171bb5db34321e45585839c6c3200ebb90
https://illumos.topicbox.com/groups/developer/T1c9e4f27f8c2f959/security-heads-up-illumos14424
https://jgardner100.wordpress.com/2022/01/20/security-heads-up/
https://kebe.com/blog/?p=505
https://www.illumos.org/issues/14424
https://www.oracle.com/security-alerts/cpujan2022.html

History

Mon, 14 Apr 2025 16:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2022-12-26T00:00:00.000Z

Updated: 2025-04-14T16:10:08.182Z

Reserved: 2021-11-04T00:00:00.000Z

Link: CVE-2021-43395

Vulnrichment

Updated: 2024-08-04T03:55:28.486Z

NVD

Status : Modified

Published: 2022-12-26T06:15:10.677

Modified: 2025-04-14T16:15:17.767

Link: CVE-2021-43395

Redhat

No data.

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