What is CVE-2026-46221?

CVE-2026-46221 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 6.18 onward and patched in 6.18.32, 7.0.9 and 7.1. CVE-2026-46221 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-46221?

CVE-2026-46221 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-2026-46221?

Yes, CVE-2026-46221 has been patched. Fixed versions include 6.18.32, 7.0.9 and 7.1. If you are running Linux kernel 6.18 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-46221 actively exploited?

CVE-2026-46221 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-2026-46221

Medium

In the Linux kernel, the following vulnerability has been resolved: EDAC/versalnet: Fix device name memory leak The device name allocated via kzalloc() in init_one_mc() is assigned to dev->init_name but never freed on the normal removal path. device_register() copies init_name and then sets dev->init_name to NULL, so the name pointer becomes unreachable from the device. Thus leaking memory. Use a stack-local char array instead of using kzalloc() for name.

Package Linux Kernel

Published 2026-05-28

Last modified 2026-06-10

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-2026-46221 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 6.18 and later are affected. Fixed in 6.18.32, 7.0.9, 7.1 and their respective stable series.

Affected from

≥ 6.18

Fixed in

✓ 6.18.32 6.18.x ✓ 7.0.9 7.0.x ✓ 7.1

References

3 total

Kernel Git
https://git.kernel.org/stable/c/24d2912962d087ebff7c4984f8ac34a5f23c8dbf

Patch
Kernel Git
https://git.kernel.org/stable/c/8cf5dd235eff6008cb04c3d8064d2acfa90616f1

Patch
Kernel Git
https://git.kernel.org/stable/c/b16033c8774f5fb4c0cb9b445a1dfc68f499ae6a

Patch

Details

CVE ID CVE-2026-46221

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-05-28

Modified 2026-06-10

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-46221?

CVE-2026-46221 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 6.18 onward and has been patched in 6.18.32, 7.0.9 and 7.1. CVE-2026-46221 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-46221?

CVE-2026-46221 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-2026-46221?

Yes. CVE-2026-46221 has been patched. Fixed versions include 6.18.32, 7.0.9 and 7.1. If you are running Linux kernel 6.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-46221 actively exploited?

No. CVE-2026-46221 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.