logo_clicknbuy.png

CVE-2025-22128 – “Linux Kernel ath12k WiFi Shared IRQ Affinity Hint Vulnerability”

The following table lists the changes that have been made to the
CVE-2025-22128 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Apr. 16, 2025

    Action Type Old Value New Value
    Added 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.
    Added Reference https://git.kernel.org/stable/c/35b33ba76765ce9e72949d957f3cf1feafd2955c
    Added Reference https://git.kernel.org/stable/c/b43b1e2c52db77c872bd60d30cdcc72c47df70c7
Share the Post:

Related Posts