Local Kernel Panic Vulnerability in illumos Operating Systems
CVE-2021-43395

5.5MEDIUM

Key Information:

Vendor

Illumos

Status
Illumos
Vendor
CVE Published:
26 December 2022

What is CVE-2021-43395?

A vulnerability exists in illumos and its derivatives that allows a local unprivileged user to exploit crafted 'rename' and 'rmdir' system calls on tmpfs filesystems, potentially leading to a deadlock condition and a kernel panic. This design flaw impacts multiple versions of illumos, including OmniOS Community Edition, OpenIndiana, and SmartOS, as well as Oracle Solaris 10 and 11. Remediation steps and updates should be applied to mitigate the risks associated with this vulnerability.

References

https://github.com/illumos/illumos-gate/blob/069654420de4...
https://github.com/illumos/illumos-gate/blob/b3403853e809...
https://www.oracle.com/security-alerts/cpujan2022.html

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.