CVE-2021-38206 Null dereference in n/a

What is CVE-2021-38206?

CVE-2021-38206 is a medium-severity vulnerability in Linux kernel, published on 8 Aug 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The mac80211 subsystem in the Linux kernel before 5.12.13, when a device supporting only 5 GHz is used, allows attackers to cause a denial of service (NULL pointer dereference in the radiotap parser) by injecting a frame with 802.11a rates.

Weakness: CWE-476

Which versions are affected by CVE-2021-38206?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2021-38206?

Upgrade to a fixed version.

Is CVE-2021-38206 being exploited?

There is no known exploitation of CVE-2021-38206 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

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

Also known as AZL-6590, DEBIAN-CVE-2021-38206, GHSA-pmfg-qv3m-chqh, UBUNTU-CVE-2021-38206.