What is CVE-2021-47137?

CVE-2021-47137 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10. CVE-2021-47137 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47137?

CVE-2021-47137 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-2021-47137?

No patch is currently available for CVE-2021-47137. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2021-47137 actively exploited?

CVE-2021-47137 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-47137

High

In the Linux kernel, the following vulnerability has been resolved: net: lantiq: fix memory corruption in RX ring In a situation where memory allocation or dma mapping fails, an invalid address is programmed into the descriptor. This can lead to memory corruption. If the memory allocation fails, DMA should reuse the previous skb and mapping and drop the packet. This patch also increments rx drop counter.

Package Linux Kernel

Published 2024-03-25

Last modified 2025-03-19

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-770

CVE-2021-47137 is classified as CWE-770

See CWE-770 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2021-47137 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/46dd4abced3cb2c912916f4a5353e0927db0c4a2
Patch
Kernel patch commit
https://git.kernel.org/stable/c/5ac72351655f8b033a2935646f53b7465c903418
Patch
Kernel patch commit
https://git.kernel.org/stable/c/8bb1077448d43a871ed667520763e3b9f9b7975d
Patch

4 patch commits total View all on NVD

Details

CVE ID CVE-2021-47137

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2024-03-25

Modified 2025-03-19

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2021-47137?

CVE-2021-47137 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . CVE-2021-47137 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47137?

CVE-2021-47137 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-2021-47137?

No patch is currently available for CVE-2021-47137. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2021-47137 actively exploited?

No — CVE-2021-47137 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.