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Vulnerability record · CVE-2021-43395 · published 26 December 2022

CVE-2021-43395: Illumos vulnerability

Illumos · Illumos

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.

5.5 CVSS 3.1 Medium EPSS 0.32% · top 77.8% CWE-667 · CWE-667
5.5CVSS 3.1 base score
0.32%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
18References, 4 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

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

Affected products

5 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.tribblix.org/relnotes.html Release NotesThird Party Advisory
https://github.com/illumos/illumos-gate/blob/069654420de4aade43c63c43cd2896e66945fc8a/usr/src/uts/common/fs/tmpfs/tmp_vn ExploitThird Party Advisory
https://github.com/illumos/illumos-gate/blob/b3403853e80914bd0aade9b5b605da4878078173/usr/src/uts/common/fs/tmpfs/tmp_di ExploitThird Party Advisory
https://github.com/illumos/illumos-gate/commit/f859e7171bb5db34321e45585839c6c3200ebb90 PatchThird Party Advisory
https://illumos.topicbox.com/groups/developer/T1c9e4f27f8c2f959/security-heads-up-illumos14424 Vendor Advisory
https://jgardner100.wordpress.com/2022/01/20/security-heads-up/ Third Party Advisory
https://kebe.com/blog/?p=505 Third Party Advisory
https://www.illumos.org/issues/14424 Issue TrackingPatchVendor Advisory
https://www.oracle.com/security-alerts/cpujan2022.html PatchThird Party Advisory
http://www.tribblix.org/relnotes.html Release NotesThird Party Advisory
https://github.com/illumos/illumos-gate/blob/069654420de4aade43c63c43cd2896e66945fc8a/usr/src/uts/common/fs/tmpfs/tmp_vn ExploitThird Party Advisory
https://github.com/illumos/illumos-gate/blob/b3403853e80914bd0aade9b5b605da4878078173/usr/src/uts/common/fs/tmpfs/tmp_di ExploitThird Party Advisory
https://github.com/illumos/illumos-gate/commit/f859e7171bb5db34321e45585839c6c3200ebb90 PatchThird Party Advisory
https://illumos.topicbox.com/groups/developer/T1c9e4f27f8c2f959/security-heads-up-illumos14424 Vendor Advisory
https://jgardner100.wordpress.com/2022/01/20/security-heads-up/ Third Party Advisory
https://kebe.com/blog/?p=505 Third Party Advisory
https://www.illumos.org/issues/14424 Issue TrackingPatchVendor Advisory
https://www.oracle.com/security-alerts/cpujan2022.html PatchThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2021-43395), CISA KEV, FIRST EPSS (scores of 2026-10-05). This page is refreshed as NVD updates the record.