What is CVE-2021-47251?

CVE-2021-47251 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10. CVE-2021-47251 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47251?

CVE-2021-47251 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2021-47251?

No patch is currently available for CVE-2021-47251. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2021-47251 actively exploited?

CVE-2021-47251 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-47251

High

In the Linux kernel, the following vulnerability has been resolved: mac80211: fix skb length check in ieee80211_scan_rx() Replace hard-coded compile-time constants for header length check with dynamic determination based on the frame type. Otherwise, we hit a validation WARN_ON in cfg80211 later. [style fixes, reword commit message]

Package Linux Kernel

Published 2024-05-21

Last modified 2025-04-30

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-1284

CVE-2021-47251 is classified as CWE-1284

See CWE-1284 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2021-47251 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/5a1cd67a801cf5ef989c4783e07b86a25b143126
Patch
Kernel patch commit
https://git.kernel.org/stable/c/d1b949c70206178b12027f66edc088d40375b5cb
Patch
Kernel patch commit
https://git.kernel.org/stable/c/e298aa358f0ca658406d524b6639fe389cb6e11e
Patch

Details

CVE ID CVE-2021-47251

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2024-05-21

Modified 2025-04-30

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2021-47251?

CVE-2021-47251 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . CVE-2021-47251 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47251?

CVE-2021-47251 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2021-47251?

No patch is currently available for CVE-2021-47251. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2021-47251 actively exploited?

No — CVE-2021-47251 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.