What is CVE-2026-43372?

CVE-2026-43372 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.6.119 onward and patched in 6.6.130, 6.12.78, 6.18.19 and others. CVE-2026-43372 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-43372?

CVE-2026-43372 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-2026-43372?

Yes, CVE-2026-43372 has been patched. Fixed versions include 6.6.130, 6.12.78, 6.18.19 and others. If you are running Linux kernel 6.6.119 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-43372 actively exploited?

CVE-2026-43372 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-43372

Medium

In the Linux kernel, the following vulnerability has been resolved: net: dsa: microchip: Fix error path in PTP IRQ setup If request_threaded_irq() fails during the PTP message IRQ setup, the newly created IRQ mapping is never disposed. Indeed, the ksz_ptp_irq_setup()'s error path only frees the mappings that were successfully set up. Dispose the newly created mapping if the associated request_threaded_irq() fails at setup.

Package Linux Kernel

Published 2026-05-08

Last modified 2026-05-15

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 6.6.119, 6.12.61, 6.17.11, 6.18 and later are affected. Fixed in 6.6.130, 6.12.78, 6.18.19, 6.19.9, 7.0 and their respective stable series.

Affected from

≥ 6.6.119 ≥ 6.12.61 ≥ 6.17.11 ≥ 6.18

Fixed in

✓ 6.6.130 6.6.x ✓ 6.12.78 6.12.x ✓ 6.18.19 6.18.x ✓ 6.19.9 6.19.x ✓ 7.0

References

The following references provide additional information about CVE-2026-43372 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/3704ac6a0d9a78f66a187515a8ca3faedaf01cc5
Patch
Kernel patch commit
https://git.kernel.org/stable/c/6c58a9fdb0d0e1011aa02455d26d6ebea251979b
Patch
Kernel patch commit
https://git.kernel.org/stable/c/99c8c16a4aad0b37293cae213e15957c573cf79b
Patch

5 patch commits total View all on NVD

Details

CVE ID CVE-2026-43372

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-05-08

Modified 2026-05-15

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-43372?

CVE-2026-43372 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.6.119 onward and has been patched in 6.6.130, 6.12.78, 6.18.19 and others. CVE-2026-43372 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-43372?

CVE-2026-43372 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-2026-43372?

Yes — CVE-2026-43372 has been patched. Fixed versions include 6.6.130, 6.12.78, 6.18.19 and others. If you are running Linux kernel 6.6.119 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-43372 actively exploited?

No — CVE-2026-43372 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.