CVE-2026-89454

/// Technical 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]

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References