SourceHandle of NetBufferList is set to NULL by… |VMware Communities

Please understand that my English is not good before starting…


I installed Windows 2019 server on VMWare Workstation.

And I found that there is an critical issue(maybe..?) where the network function is malfunctioning.


The cause is VMWare’s vmxnet3.sys driver.


About 7~8 month ago, Your Company provided VMWare Horizon hotfix patch based on my analysis datas. (Double Free Issue of NBL Context in vmwvudpd.sys)


And Now… the new bug seems to be a related with vmxnet3.sys…


Look at the picture below..


The current state of the WFP layer is FWPM_LAYER_INBOUND_MAC_FRAME_ETHERNET.

The SourceHandle in NBL is NULL.


That is, the NIC information of the packet received from vmxnet3.sys cannot be obtained.


So I am requesting a review of the fix for this bug.


If you have any questions, please reply to the email below.





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