CVE-2025-23129

/// Technical description

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

wifi: ath11k: Clear affinity hint before calling ath11k_pcic_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

ath11k_pci_alloc_msi(). This does no harm unless one of the functions

requesting the IRQ fails and attempt to free the IRQ. This results in the

below warning:

WARNING: CPU: 7 PID: 349 at kernel/irq/manage.c:1929 free_irq+0x278/0x29c

Call trace:

free_irq+0x278/0x29c

ath11k_pcic_free_irq+0x70/0x10c [ath11k]

ath11k_pci_probe+0x800/0x820 [ath11k_pci]

local_pci_probe+0x40/0xbc

The warning is due to not clearing the affinity hint before freeing the

IRQs.

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

ath11k_pcic_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.

Tested-on: QCA

/// 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