What is CVE-2021-47313?

CVE-2021-47313 is a High severity Linux kernel vulnerability with a CVSS score of 8.4 out of 10, classified as a Uncontrolled Resource Consumption flaw (CWE-400), affecting Linux kernel versions from 5.11 onward and patched in 5.12.19, 5.13.4 and 5.14. CVE-2021-47313 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47313?

CVE-2021-47313 has a CVSS score of 8.4 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2021-47313?

Yes, CVE-2021-47313 has been patched. Fixed versions include 5.12.19, 5.13.4 and 5.14. If you are running Linux kernel 5.11 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-47313 actively exploited?

CVE-2021-47313 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Uncontrolled Resource Consumption (CWE-400)?

The product does not properly control the amount of resources it consumes, leading to exhaustion. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/400.html

CVE-2021-47313

High

In the Linux kernel, the following vulnerability has been resolved: cpufreq: CPPC: Fix potential memleak in cppc_cpufreq_cpu_init It's a classic example of memleak, we allocate something, we fail and never free the resources. Make sure we free all resources on policy ->init() failures.

Package Linux Kernel

Published 2024-05-21

Last modified 2025-04-02

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

8.4

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-400

CVE-2021-47313 is a Uncontrolled Resource Consumption vulnerability

What is Uncontrolled Resource Consumption?

The product does not properly control the amount of resources it consumes, leading to exhaustion. Learn more on MITRE CWE

Affected versions

Linux kernel versions 5.11 and later are affected. Fixed in 5.12.19, 5.13.4, 5.14 and their respective stable series.

Affected from

≥ 5.11

Fixed in

✓ 5.12.19 5.12.x ✓ 5.13.4 5.13.x ✓ 5.14

References

3 total

Kernel Git
https://git.kernel.org/stable/c/b775383355755885b19d2acef977f1ca132e80a3

Patch
Kernel Git
https://git.kernel.org/stable/c/e1b2b2b61d30d7ce057ec17237c217d152ed97f2

Patch
Kernel Git
https://git.kernel.org/stable/c/fe2535a44904a77615a3af8e8fd7dafb98fb0e1b

Patch

Details

CVE ID CVE-2021-47313

Severity High

CVSS score 8.4 / 10

CVSS version 3.1

Published 2024-05-21

Modified 2025-04-02

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-47313?

CVE-2021-47313 is a High severity Linux kernel vulnerability with a CVSS score of 8.4 out of 10 , classified as an Uncontrolled Resource Consumption flaw (CWE-400) . It affects Linux kernel versions from 5.11 onward and has been patched in 5.12.19, 5.13.4 and 5.14. CVE-2021-47313 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47313?

CVE-2021-47313 has a CVSS score of 8.4 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2021-47313?

Yes. CVE-2021-47313 has been patched. Fixed versions include 5.12.19, 5.13.4 and 5.14. If you are running Linux kernel 5.11 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-47313 actively exploited?

No. CVE-2021-47313 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.