What is CVE-2021-47352?

CVE-2021-47352 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Out-of-bounds Write flaw (CWE-787). CVE-2021-47352 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47352?

CVE-2021-47352 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-2021-47352?

No patch is currently available for CVE-2021-47352. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2021-47352 actively exploited?

CVE-2021-47352 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-2021-47352

High

In the Linux kernel, the following vulnerability has been resolved: virtio-net: Add validation for used length This adds validation for used length (might come from an untrusted device) to avoid data corruption or loss.

Package Linux Kernel

Published 2024-05-21

Last modified 2025-11-14

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-787

CVE-2021-47352 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-2021-47352 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/3133e01514c3c498f2b01ff210ee6134b70c663c
Patch
Kernel patch commit
https://git.kernel.org/stable/c/ad993a95c508417acdeb15244109e009e50d8758
Patch
Kernel patch commit
https://git.kernel.org/stable/c/ba710baa1cc1b17a0483f7befe03e696efd17292
Patch

5 patch commits total View all on NVD

Details

CVE ID CVE-2021-47352

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2024-05-21

Modified 2025-11-14

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2021-47352?

CVE-2021-47352 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Out-of-bounds Write flaw (CWE-787) . CVE-2021-47352 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47352?

CVE-2021-47352 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-2021-47352?

No patch is currently available for CVE-2021-47352. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2021-47352 actively exploited?

No — CVE-2021-47352 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 →