What is CVE-2021-47348?

CVE-2021-47348 is a Critical severity Linux kernel vulnerability with a CVSS score of 9.1 out of 10, classified as a Buffer Overflow flaw (CWE-119). CVE-2021-47348 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47348?

CVE-2021-47348 has a CVSS score of 9.1 out of 10, rated Critical severity. The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

Is there a patch available for CVE-2021-47348?

No patch is currently available for CVE-2021-47348. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2021-47348 actively exploited?

CVE-2021-47348 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Buffer Overflow (CWE-119)?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/119.html

CVE-2021-47348

Critical

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Avoid HDCP over-read and corruption Instead of reading the desired 5 bytes of the actual target field, the code was reading 8. This could result in a corrupted value if the trailing 3 bytes were non-zero, so instead use an appropriately sized and zero-initialized bounce buffer, and read only 5 bytes before casting to u64.

Package Linux Kernel

Published 2024-05-21

Last modified 2025-04-02

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

9.1

out of 10

Critical

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-119

CVE-2021-47348 is a Buffer Overflow vulnerability

What is Buffer Overflow?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2021-47348 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/06888d571b513cbfc0b41949948def6cb81021b2
Patch
Kernel patch commit
https://git.kernel.org/stable/c/3b2b93a485fb7a970bc8b5daef16f4cf579d172f
Patch
Kernel patch commit
https://git.kernel.org/stable/c/44c7c901cb368a9f2493748f213b247b5872639f
Patch

4 patch commits total View all on NVD

Details

CVE ID CVE-2021-47348

Severity Critical

CVSS score 9.1 / 10

CVSS version 3.1

Published 2024-05-21

Modified 2025-04-02

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2021-47348?

CVE-2021-47348 is a Critical severity Linux kernel vulnerability with a CVSS score of 9.1 out of 10 , classified as a Buffer Overflow flaw (CWE-119) . CVE-2021-47348 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47348?

CVE-2021-47348 has a CVSS score of 9.1 out of 10, rated Critical severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.
Is there a patch available for CVE-2021-47348?

No patch is currently available for CVE-2021-47348. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2021-47348 actively exploited?

No — CVE-2021-47348 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Buffer Overflow (CWE-119)?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. View CWE-119 on MITRE CWE →