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.
Advisories

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Fixes

Solution

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Workaround

No workaround given by the vendor.

History

Wed, 10 Dec 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Moderate


Tue, 09 Dec 2025 04:30:00 +0000

Type Values Removed Values Added
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.
Title bnxt_en: Shutdown FW DMA in bnxt_shutdown()
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-12-09T04:09:47.251Z

Reserved: 2025-04-16T07:20:57.186Z

Link: CVE-2025-40330

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-12-09T16:17:43.133

Modified: 2025-12-09T18:36:53.557

Link: CVE-2025-40330

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-12-09T00:00:00Z

Links: CVE-2025-40330 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.