What is CVE-2021-47093?

CVE-2021-47093 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Memory Leak flaw (CWE-401), affecting Linux kernel versions from 5.9 onward and patched in 5.10.89, 5.15.12 and 5.16. CVE-2021-47093 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47093?

CVE-2021-47093 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2021-47093?

Yes, CVE-2021-47093 has been patched. Fixed versions include 5.10.89, 5.15.12 and 5.16. If you are running Linux kernel 5.9 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-47093 actively exploited?

CVE-2021-47093 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Memory Leak (CWE-401)?

The product does not release memory after use, causing gradual resource exhaustion. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/401.html

CVE-2021-47093

Medium

In the Linux kernel, the following vulnerability has been resolved: platform/x86: intel_pmc_core: fix memleak on registration failure In case device registration fails during module initialisation, the platform device structure needs to be freed using platform_device_put() to properly free all resources (e.g. the device name).

Package Linux Kernel

Published 2024-03-04

Last modified 2025-01-14

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-401

CVE-2021-47093 is a Memory Leak vulnerability

What is Memory Leak?

The product does not release memory after use, causing gradual resource exhaustion. Learn more on MITRE CWE

Affected versions

Linux kernel versions 5.9 and later are affected. Fixed in 5.10.89, 5.15.12, 5.16 and their respective stable series.

Affected from

≥ 5.9

Fixed in

✓ 5.10.89 5.10.x ✓ 5.15.12 5.15.x ✓ 5.16

References

3 total

Kernel Git
https://git.kernel.org/stable/c/26a8b09437804fabfb1db080d676b96c0de68e7c

Patch
Kernel Git
https://git.kernel.org/stable/c/7a37f2e370699e2feca3dca6c8178c71ceee7e8a

Patch
Kernel Git
https://git.kernel.org/stable/c/9ca1324755f1f8629a370af5cc315b175331f5d1

Patch

Details

CVE ID CVE-2021-47093

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-03-04

Modified 2025-01-14

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-47093?

CVE-2021-47093 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a Memory Leak flaw (CWE-401) . It affects Linux kernel versions from 5.9 onward and has been patched in 5.10.89, 5.15.12 and 5.16. CVE-2021-47093 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47093?

CVE-2021-47093 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2021-47093?

Yes. CVE-2021-47093 has been patched. Fixed versions include 5.10.89, 5.15.12 and 5.16. If you are running Linux kernel 5.9 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-47093 actively exploited?

No. CVE-2021-47093 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.