CVE-2025-22128

Technical Description

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

wifi: ath12k: Clear affinity hint before calling ath12k_pci_free_irq() in error path

If a shared IRQ is used by the driver due to platform limitation, then the

IRQ affinity hint is set right after the allocation of IRQ vectors in

ath12k_pci_msi_alloc(). This does no harm unless one of the functions

requesting the IRQ fails and attempt to free the IRQ.

This may end up with a warning from the IRQ core that is expecting the

affinity hint to be cleared before freeing the IRQ:

kernel/irq/manage.c:

/* make sure affinity_hint is cleaned up */

if (WARN_ON_ONCE(desc->affinity_hint))

desc->affinity_hint = NULL;

So to fix this issue, clear the IRQ affinity hint before calling

ath12k_pci_free_irq() in the error path. The affinity will be cleared once

again further down the error path due to code organization, but that does

no harm.

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. 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.

Affected Products

References