CVE-2021-38206
Summary
| CVE | CVE-2021-38206 |
|---|---|
| State | PUBLISHED |
| Assigner | mitre |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2021-08-08 20:15:07 UTC |
| Updated | 2026-10-08 21:17:39 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 5.5 MEDIUM from [email protected]
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS: 0.002690000 probability, percentile 0.175040000 (date 2026-10-10)
Problem Types: CWE-476 | n/a
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 5.5 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| 2.0 | [email protected] | Primary | 2.1 | AV:L/AC:L/Au:N/C:N/I:N/A:P |
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v2.0 Breakdown
Access Vector
LocalAccess Complexity
LowAuthentication
NoneConfidentiality
NoneIntegrity
NoneAvailability
PartialAV:L/AC:L/Au:N/C:N/I:N/A:P
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Linux | Linux Kernel | All | All | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| mac80211: Fix NULL ptr deref for injected rate info · torvalds/linux@bddc0c4 · GitHub | af854a3a-2127-422b-91ae-364da2661108 | github.com | Patch, Third Party Advisory |
| cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13 | af854a3a-2127-422b-91ae-364da2661108 | cdn.kernel.org | Mailing List, Patch, Vendor Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 179676 Debian Security Update for linux (CVE-2021-38206)
- 198491 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5070-1)
- 751160 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:3179-1)
- 751170 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:3205-1)
- 900294 CBL-Mariner Linux Security Update for kernel 5.10.52.1
- 900304 CBL-Mariner Linux Security Update for kernel 5.10.57.1
- 900319 CBL-Mariner Linux Security Update for kernel 5.10.60.1
- 901109 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (6590-1)
- 903700 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (5081)
- 905907 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (5081-1)