Vulnerability Description
A NULL pointer dereference flaw was found in the Linux kernel’s IEEE 802.15.4 wireless networking subsystem in the way the user closes the LR-WPAN connection. This flaw allows a local user to crash the system. The highest threat from this vulnerability is to system availability.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 5.12 |
| Fedoraproject | Fedora | 34 |
| Redhat | Enterprise Linux | 7.0 |
| Redhat | Enterprise Linux For Ibm Z Systems | 8.0 |
| Redhat | Enterprise Linux For Ibm Z Systems Eus | 8.6 |
| Redhat | Enterprise Linux For Power Little Endian Eus | 8.6 |
| Redhat | Enterprise Linux For Real Time | 8.0 |
| Redhat | Enterprise Linux For Real Time For Nfv | 8.0 |
| Redhat | Enterprise Linux For Real Time For Nfv Tus | 8.6 |
| Redhat | Enterprise Linux For Real Time Tus | 8.6 |
| Redhat | Enterprise Linux Server Aus | 8.6 |
| Redhat | Enterprise Linux Server Eus | 8.6 |
| Redhat | Enterprise Linux Server Tus | 8.6 |
| Redhat | Codeready Linux Builder | - |
| Redhat | Enterprise Linux Eus | 8.6 |
| Redhat | Enterprise Linux For Power Little Endian | 8.0 |
| Redhat | Virtualization Host | 4.0 |
Related Weaknesses (CWE)
References
- https://access.redhat.com/security/cve/CVE-2021-3659Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1975949Issue TrackingPatchThird Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=11PatchVendor Advisory
- https://access.redhat.com/security/cve/CVE-2021-3659Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1975949Issue TrackingPatchThird Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=11PatchVendor Advisory
FAQ
What is CVE-2021-3659?
CVE-2021-3659 is a vulnerability with a CVSS score of 5.5 (MEDIUM). A NULL pointer dereference flaw was found in the Linux kernel’s IEEE 802.15.4 wireless networking subsystem in the way the user closes the LR-WPAN connection. This flaw allows a local user to crash th...
How severe is CVE-2021-3659?
CVE-2021-3659 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-3659?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Fedoraproject Fedora, Redhat Enterprise Linux, Redhat Enterprise Linux For Ibm Z Systems, Redhat Enterprise Linux For Ibm Z Systems Eus.