What is CVE-2024-27418?

CVE-2024-27418 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 5.15 onward and patched in 6.1.81, 6.6.21, 6.7.9 and others. CVE-2024-27418 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-27418?

CVE-2024-27418 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-2024-27418?

Yes, CVE-2024-27418 has been patched. Fixed versions include 6.1.81, 6.6.21, 6.7.9 and others. If you are running Linux kernel 5.15 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-27418 actively exploited?

CVE-2024-27418 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-2024-27418

Medium

In the Linux kernel, the following vulnerability has been resolved: net: mctp: take ownership of skb in mctp_local_output Currently, mctp_local_output only takes ownership of skb on success, and we may leak an skb if mctp_local_output fails in specific states; the skb ownership isn't transferred until the actual output routing occurs. Instead, make mctp_local_output free the skb on all error paths up to the route action, so it always consumes the passed skb.

Package Linux Kernel

Published 2024-05-17

Last modified 2025-09-26

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-2024-27418 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 5.15 and later are affected. Fixed in 6.1.81, 6.6.21, 6.7.9, 6.8 and their respective stable series.

Affected from

≥ 5.15

Fixed in

✓ 6.1.81 6.1.x ✓ 6.6.21 6.6.x ✓ 6.7.9 6.7.x ✓ 6.8

References

4 total

Kernel Git
https://git.kernel.org/stable/c/3773d65ae5154ed7df404b050fd7387a36ab5ef3

Patch
Kernel Git
https://git.kernel.org/stable/c/a3c8fa54e904b0ddb52a08cc2d8ac239054f61fd

Patch
Kernel Git
https://git.kernel.org/stable/c/a639441c880ac479495e5ab37e3c29f21ae5771b

Patch
Kernel Git
https://git.kernel.org/stable/c/cbebc55ceacef1fc0651e80e0103cc184552fc68

Patch

Details

CVE ID CVE-2024-27418

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-05-17

Modified 2025-09-26

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-27418?

CVE-2024-27418 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 5.15 onward and has been patched in 6.1.81, 6.6.21, 6.7.9 and others. CVE-2024-27418 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-27418?

CVE-2024-27418 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-2024-27418?

Yes. CVE-2024-27418 has been patched. Fixed versions include 6.1.81, 6.6.21, 6.7.9 and others. If you are running Linux kernel 5.15 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-27418 actively exploited?

No. CVE-2024-27418 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.