What is CVE-2026-46074?

CVE-2026-46074 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 6.11 onward and patched in 6.12.86, 6.18.27, 7.0.4 and others. CVE-2026-46074 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-46074?

CVE-2026-46074 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-2026-46074?

Yes, CVE-2026-46074 has been patched. Fixed versions include 6.12.86, 6.18.27, 7.0.4 and others. If you are running Linux kernel 6.11 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-46074 actively exploited?

CVE-2026-46074 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-2026-46074

Medium

In the Linux kernel, the following vulnerability has been resolved: spi: ch341: fix memory leaks on probe failures Make sure to deregister the controller, disable pins, and kill and free the RX URB on probe failures to mirror disconnect and avoid memory leaks and use-after-free. Also add an explicit URB kill on disconnect for symmetry (even if that is not strictly required as USB core would have stopped it in the current setup).

Package Linux Kernel

Published 2026-05-27

Last modified 2026-06-24

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-2026-46074 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 6.11 and later are affected. Fixed in 6.12.86, 6.18.27, 7.0.4, 7.1 and their respective stable series.

Affected from

≥ 6.11

Fixed in

✓ 6.12.86 6.12.x ✓ 6.18.27 6.18.x ✓ 7.0.4 7.0.x ✓ 7.1

References

4 total

Kernel Git
https://git.kernel.org/stable/c/5c6518633702d7f7b1153e9d8e042af847f11ef3

Patch
Kernel Git
https://git.kernel.org/stable/c/9bee2faf9e21c796d0d222c9d84a98f41bd303a0

Patch
Kernel Git
https://git.kernel.org/stable/c/b99e3ddb91b499d920e63a2daff8880be68cfe9e

Patch
Kernel Git
https://git.kernel.org/stable/c/ff8a7996dc8bf433efe2126ffdaee5b374a89e30

Patch

Details

CVE ID CVE-2026-46074

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-05-27

Modified 2026-06-24

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-46074?

CVE-2026-46074 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 6.11 onward and has been patched in 6.12.86, 6.18.27, 7.0.4 and others. CVE-2026-46074 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-46074?

CVE-2026-46074 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-2026-46074?

Yes. CVE-2026-46074 has been patched. Fixed versions include 6.12.86, 6.18.27, 7.0.4 and others. If you are running Linux kernel 6.11 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-46074 actively exploited?

No. CVE-2026-46074 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.