CVE-2026-43372 Details
Description
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.
A vulnerability exists in the Linux kernel's handling of Precision Time Protocol (PTP) message interrupt requests for certain Microchip Ethernet switches. When the function request_threaded_irq() fails during the setup of PTP message interrupts, the newly created interrupt request (IRQ) mapping is not properly disposed of. This oversight can lead to resource leaks, as the error handling in the ksz_ptp_irq_setup() function only frees IRQ mappings that were successfully established. The vulnerability arises because the error path does not account for failed IRQ requests, leaving unused mappings that could potentially cause issues.
Users can apply the latest patches available in the Linux kernel stable tree to address this vulnerability. Instructions for downloading the patched version can be found in the Linux kernel Git repository.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/3704ac6a0d9a78f66a187515a8ca3faedaf01cc5 | kernel.org | Patch |
| https://git.kernel.org/stable/c/6c58a9fdb0d0e1011aa02455d26d6ebea251979b | kernel.org | Patch |
| https://git.kernel.org/stable/c/99c8c16a4aad0b37293cae213e15957c573cf79b | kernel.org | Patch |
| https://git.kernel.org/stable/c/c2d1d41e0e8ec447d40a5752844fc5fb0b23db27 | kernel.org | Patch |
| https://git.kernel.org/stable/c/e80fef36c676c947072dabeb5803ae59d92ba493 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.6.119, < 6.6.130 >= 6.12.61, < 6.12.78 >= 6.17.11, < 6.18 >= 6.18.1, < 6.18.19 >= 6.19, < 6.19.9 6.18 - 7.0 rc1 7.0 rc2 7.0 rc3 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 15, 2026 | Initial Analysis | [email protected] |
| May 8, 2026 | New CVE Received | kernel.org |