Disclosure summary
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.
Source-reported weakness categories
CWE-476
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2021-38206
Open original source · Updated Oct 08, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| linux | linux_kernel | * {"versionEndExcluding":"5.12.13"} |
Original records & references
- NIST NVD record
- CVE Program record
- cdn.kernel.org — Mailing List, Patch, Vendor Advisory
- github.com — Patch, Third Party Advisory
- cdn.kernel.org — Mailing List, Patch, Vendor Advisory
- github.com — Patch, Third Party Advisory
PUBLISHED 2021-08-08T16:15:07-04:00
MODIFIED 2026-10-08T17:17:39-04:00
INGESTED 2026-10-10T20:50:20-04:00