Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bnxt_en: Shutdown FW DMA in bnxt_shutdown() The netif_close() call in bnxt_shutdown() only stops packet DMA. There may be FW DMA for trace logging (recently added) that will continue. If we kexec to a new kernel, the DMA will corrupt memory in the new kernel. Add bnxt_hwrm_func_drv_unrgtr() to unregister the driver from the FW. This will stop the FW DMA. In case the call fails, call pcie_flr() to reset the function and stop the DMA.
References
- https://git.kernel.org/stable/c/1a8a15c3f71d1199d510ccba4bc201cbd2204048
- https://git.kernel.org/stable/c/bc7208ca805ae6062f353a4753467d913d963bc6
FAQ
What is CVE-2025-40330?
CVE-2025-40330 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: bnxt_en: Shutdown FW DMA in bnxt_shutdown() The netif_close() call in bnxt_shutdown() only stops packet DMA. There may be FW DMA ...
How severe is CVE-2025-40330?
CVSS scoring is not yet available for CVE-2025-40330. Check NVD for updates.
Is there a patch for CVE-2025-40330?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.