What is CVE-2024-27021?

CVE-2024-27021 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Improper Locking flaw (CWE-667), affecting Linux kernel versions from 6.8 onward and patched in 6.8.8 and 6.9. CVE-2024-27021 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-27021?

CVE-2024-27021 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-2024-27021?

Yes, CVE-2024-27021 has been patched. Fixed versions include 6.8.8 and 6.9. If you are running Linux kernel 6.8 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-27021 actively exploited?

CVE-2024-27021 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Improper Locking (CWE-667)?

The product does not properly acquire or release a lock, which can lead to unexpected behaviour. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/667.html

CVE-2024-27021

High

In the Linux kernel, the following vulnerability has been resolved: r8169: fix LED-related deadlock on module removal Binding devm_led_classdev_register() to the netdev is problematic because on module removal we get a RTNL-related deadlock. Fix this by avoiding the device-managed LED functions. Note: We can safely call led_classdev_unregister() for a LED even if registering it failed, because led_classdev_unregister() detects this and is a no-op in this case.

Package Linux Kernel

Published 2024-05-01

Last modified 2025-11-04

CVSS version 3.1

Patch available

Yes

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-667

CVE-2024-27021 is a Improper Locking vulnerability

What is Improper Locking?

The product does not properly acquire or release a lock, which can lead to unexpected behaviour. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.8 and later are affected. Fixed in 6.8.8, 6.9 and their respective stable series.

Affected from

≥ 6.8

Fixed in

✓ 6.8.8 6.8.x ✓ 6.9

References

5 total

Details

CVE ID CVE-2024-27021

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2024-05-01

Modified 2025-11-04

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-27021?

CVE-2024-27021 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Improper Locking flaw (CWE-667) . It affects Linux kernel versions from 6.8 onward and has been patched in 6.8.8 and 6.9. CVE-2024-27021 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-27021?

CVE-2024-27021 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-2024-27021?

Yes. CVE-2024-27021 has been patched. Fixed versions include 6.8.8 and 6.9. If you are running Linux kernel 6.8 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-27021 actively exploited?

No. CVE-2024-27021 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.