# CVE-2026-89454

## Summary

- **CVE ID:** CVE-2026-89454
- **Severity:** UNKNOWN
- **CVSS Score:** 1.51
- **CWE:** N/A
- **Published:** Sep 11, 2026
- **Last Modified:** Sep 16, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:

PCI: plda: Fix IRQ domain leaks in the error paths of plda_init_interrupts()

plda_init_interrupts() initializes IRQ domains and creates IRQ mapping but
does not unwind them when later step fails.

If platform_get_irq() or either irq_create_mapping() fails
in plda_init_interrupts(), the domains are never deinitialized. If
irq_create_mapping() fails, port->intx_irq stays initialized.

Hence, remove the IRQ domains in the error path by calling
plda_pcie_irq_domain_deinit().

Since plda_pcie_irq_domain_deinit() now disposes of the intx_irq and
msi_irq mappings itself before removing their domains, the msi_irq
mapping failure path can go directly to err_irq_domain_deinit instead of
disposing of port->intx_irq separately first.

This issue was found by automated review of sashiko-bot

[mani: commit log]

## Affected Products

- Linux — Linux (4602c370bdf6946b4e954a3db0ef5958aac2b7b4)
- Linux — Linux (6.11)
- Linux — Linux (0)
- Linux — Linux (6.12.109)
- Linux — Linux (6.18.50)
- Linux — Linux (7.2.4)
- Linux — Linux (7.3-rc1)

## References

- [CNA](https://git.kernel.org/stable/c/01b05cebe1e862e31e382359848d7dca02525a4f)
- [CNA](https://git.kernel.org/stable/c/4b575052ea65423693726a21826d783cf3f1745e)
- [CNA](https://git.kernel.org/stable/c/e54e8d2a0f9c8bf251ae4385ea4f4a68840fedad)
- [CNA](https://git.kernel.org/stable/c/19a30bbb6477bfd7e3109b7a2943e6597ee9de37)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.20%
- **EPSS Percentile:** 10.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._