CVE-2025-40330
Unknown
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.
SeverityUnknown
CVSS—
Exploit probability—
Product
Linux
PublishedDec 9, 2025
First seenDec 9, 2025
How to fix
Update
- Linux Linux1a8a15c3f71d1199d510ccba4bc201cbd2204048, bc7208ca805ae6062f353a4753467d913d963bc6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 24d694aec139e9e0a31c60993db79bd8ad575afe ≤ v < 1a8a15c3f71d1199d510ccba4bc201cbd2204048, 24d694aec139e9e0a31c60993db79bd8ad575afe ≤ v < bc7208ca805ae6062f353a4753467d913d963bc6, 6.13 | 1a8a15c3f71d1199d510ccba4bc201cbd2204048, bc7208ca805ae6062f353a4753467d913d963bc6 |
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