CVE-2021-38206

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.

CVSS 3.1

5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.3% chance of exploitation in the next 30 days; higher than 18% of CVEs (scores of 2026-10-25)

CWE

CWE-476

Published

2021-08-08

Modified

2026-10-08

Record from

the NVD, synced 2026-10-19

Affected

• linux:linux_kernel

References

• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13
• https://github.com/torvalds/linux/commit/bddc0c411a45d3718ac535a070f349be8eca8d48
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13
• https://github.com/torvalds/linux/commit/bddc0c411a45d3718ac535a070f349be8eca8d48

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