CVE-2026-89454PCI: plda: Fix IRQ domain leaks in the error paths of plda_init_interrupts()

Official 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 packages & fixed versions

Affected products (as reported)

References

• https://git.kernel.org/stable/c/01b05cebe1e862e31e382359848d7dca02525a4f
• https://git.kernel.org/stable/c/4b575052ea65423693726a21826d783cf3f1745e
• https://git.kernel.org/stable/c/e54e8d2a0f9c8bf251ae4385ea4f4a68840fedad
• https://git.kernel.org/stable/c/19a30bbb6477bfd7e3109b7a2943e6597ee9de37