CWE
667
Advisory Published
Updated

CVE-2021-43395

First published: Mon Dec 26 2022(Updated: )

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.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Illumos Illumos<2022-01-18
Omniosce Omnios=r151038
Openindiana Openindiana=hipster_2021.04
Joyent SmartOS=20210923
Oracle Solaris=10
Oracle Solaris=11

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Frequently Asked Questions

  • What is the vulnerability ID of this issue?

    The vulnerability ID is CVE-2021-43395.

  • What is the severity level of CVE-2021-43395?

    The severity level of CVE-2021-43395 is medium with a score of 5.5.

  • Which software versions are affected by CVE-2021-43395?

    CVE-2021-43395 affects illumos before f859e7171bb5db34321e45585839c6c3200ebb90, OmniOS Community Edition r151038, OpenIndiana Hipster 2021.04, and SmartOS 20210923.

  • How can a local unprivileged user exploit CVE-2021-43395?

    A local unprivileged user can cause a deadlock and kernel panic by crafting rename and rmdir calls on tmpfs filesystems.

  • Are there any references or resources available for CVE-2021-43395?

    Yes, you can find more information about CVE-2021-43395 at the following links: [http://www.tribblix.org/relnotes.html](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/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/blob/b3403853e80914bd0aade9b5b605da4878078173/usr/src/uts/common/fs/tmpfs/tmp_dir.c)

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