CVE-2021-3659 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.

What is CVE-2021-3659?

CVE-2021-3659 is a medium-severity vulnerability in Fedoraproject Fedora, published on 22 Aug 2022.

Official 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.

Weakness: CWE-476, CWE-252

Which versions are affected by CVE-2021-3659?

It affects 15 products.

Products include Fedoraproject Fedora, Linux kernel, Redhat Codeready Linux Builder, Redhat Enterprise Linux, Redhat Enterprise Linux for Ibm Z Systems, Redhat Enterprise Linux for Ibm Z Systems Eus and 9 more.

How do I fix CVE-2021-3659?

Upgrade to a fixed version.

Is CVE-2021-3659 being exploited?

There is no known exploitation of CVE-2021-3659 in the wild and no public exploit code.

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All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2021-3659, GHSA-578w-3cjw-832g, UBUNTU-CVE-2021-3659.