CVE-2025-22128 - "Linux Kernel ath12k WiFi Shared IRQ Affinity Hint Vulnerability"

CVE-2025-22128 - "Linux Kernel ath12k WiFi Shared IRQ Affinity Hint Vulnerability"

https://cvefeed.io/rssfeed/latest.atom / Wed, 04/16/2025 - 20:36
CVE ID : CVE-2025-22128
Published : April 16, 2025, 3:16 p.m. | 2 hours, 5 minutes ago
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.
Severity: 0.0 | NA
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