CVE-2021-43395: Illumos

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Illumos Illumos: before 2022-01-18 (fixed in 2022-01-18)
• Joyent Smartos: version 20210923 only
• Omniosce Omnios: version r151038 only
• Openindiana Openindiana: version hipster_2021.04 only
• Oracle Solaris: version 10 only; version 11 only

Published 2022-12-26. Last modified 2026-06-17.