What is CVE-2026-46142?

CVE-2026-46142 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.6.117 onward and patched in 6.6.140, 6.12.88, 6.18.30 and others. CVE-2026-46142 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-46142?

CVE-2026-46142 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-2026-46142?

Yes, CVE-2026-46142 has been patched. Fixed versions include 6.6.140, 6.12.88, 6.18.30 and others. If you are running Linux kernel 6.6.117 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-46142 actively exploited?

CVE-2026-46142 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-46142

Medium

In the Linux kernel, the following vulnerability has been resolved: net: libwx: fix VF illegal register access Register WX_CFG_PORT_ST is a PF restricted register. When a VF is initialized, attempting to read this register triggers an illegal register access, which lead to a system hang. When the device is VF, the bus function ID can be obtained directly from the PCI_FUNC(pdev->devfn).

Package Linux Kernel

Published 2026-05-28

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

Affected versions

Linux kernel versions 6.6.117, 6.12.58, 6.17.8, 6.18 and later are affected. Fixed in 6.6.140, 6.12.88, 6.18.30, 7.0.7, 7.1 and their respective stable series.

Affected from

≥ 6.6.117 ≥ 6.12.58 ≥ 6.17.8 ≥ 6.18

Fixed in

✓ 6.6.140 6.6.x ✓ 6.12.88 6.12.x ✓ 6.18.30 6.18.x ✓ 7.0.7 7.0.x ✓ 7.1

References

5 total

Kernel Git
https://git.kernel.org/stable/c/33c5bb50b9c40e8451e6aec4487a31d794b98d92

Patch
Kernel Git
https://git.kernel.org/stable/c/68a007a701bc06fa426507c551ef12514f2e721d

Patch
Kernel Git
https://git.kernel.org/stable/c/694de316f607fe2473d52ca0707e3918e72c1562

Patch
Kernel Git
https://git.kernel.org/stable/c/d3bd8040497968f6f5470018724ef7b0df92f707

Patch
Kernel Git
https://git.kernel.org/stable/c/f6e656f7cea16b638675a2ab7d7e4cf2516c5eb0

Patch

Details

CVE ID CVE-2026-46142

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-05-28

Modified 2026-06-24

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-46142?

CVE-2026-46142 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.6.117 onward and has been patched in 6.6.140, 6.12.88, 6.18.30 and others. CVE-2026-46142 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-46142?

CVE-2026-46142 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-2026-46142?

Yes. CVE-2026-46142 has been patched. Fixed versions include 6.6.140, 6.12.88, 6.18.30 and others. If you are running Linux kernel 6.6.117 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-46142 actively exploited?

No. CVE-2026-46142 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.