# CVE-2026-43372: linux: In the Linux kernel, the following vulnerability has been resolved:  net: dsa: microchip: Fix error path in PTP IRQ s...

CVE-2026-43372 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-43372, released May 15, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-43372
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0012
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 8, 2026

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.12.85-1 | [DEBIAN-CVE-2026-43372](https://patchblox.com/security/data/fix/linux/debian-cve-2026-43372.md) | May 15, 2026 |
| Linux | linux Debian 14 | 6.19.10-1 | [DEBIAN-CVE-2026-43372](https://patchblox.com/security/data/fix/linux/debian-cve-2026-43372.md) | May 15, 2026 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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