What is CVE-2021-47138?

CVE-2021-47138 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10, classified as a Out-of-bounds Write flaw (CWE-787). CVE-2021-47138 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47138?

CVE-2021-47138 has a CVSS score of 7.1 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:N/A:H.

Is there a patch available for CVE-2021-47138?

No patch is currently available for CVE-2021-47138. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2021-47138 actively exploited?

CVE-2021-47138 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Out-of-bounds Write (CWE-787)?

The product writes data past the end or before the beginning of the intended buffer. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/787.html

CVE-2021-47138

High

In the Linux kernel, the following vulnerability has been resolved: cxgb4: avoid accessing registers when clearing filters Hardware register having the server TID base can contain invalid values when adapter is in bad state (for example, due to AER fatal error). Reading these invalid values in the register can lead to out-of-bound memory access. So, fix by using the saved server TID base when clearing filters.

Package Linux Kernel

Published 2024-03-25

Last modified 2025-03-13

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

7.1

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-787

CVE-2021-47138 is a Out-of-bounds Write vulnerability

What is Out-of-bounds Write?

The product writes data past the end or before the beginning of the intended buffer. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2021-47138 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/02f03883fdb10ad7e66717c70ea163a8d27ae6e7
Patch
Kernel patch commit
https://git.kernel.org/stable/c/0bf49b3c8d8b3a43ce09f1b2db70e5484d31fcdf
Patch
Kernel patch commit
https://git.kernel.org/stable/c/285207a558ab456aa7d8aa877ecc7e91fcc51710
Patch

4 patch commits total View all on NVD

Details

CVE ID CVE-2021-47138

Severity High

CVSS score 7.1 / 10

CVSS version 3.1

Published 2024-03-25

Modified 2025-03-13

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2021-47138?

CVE-2021-47138 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10 , classified as an Out-of-bounds Write flaw (CWE-787) . CVE-2021-47138 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47138?

CVE-2021-47138 has a CVSS score of 7.1 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:N/A:H.
Is there a patch available for CVE-2021-47138?

No patch is currently available for CVE-2021-47138. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2021-47138 actively exploited?

No — CVE-2021-47138 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Out-of-bounds Write (CWE-787)?

The product writes data past the end or before the beginning of the intended buffer. View CWE-787 on MITRE CWE →