Multiple computers getting netio.sys BSOD after 2022.2.1.9 update

We're having an outbreak of DRIVER_IRQL_NOT_LESS_OR_EQUAL BSOD's in driver NETIO.SYS. Netio.sys caused BSOD's are usually tied to network drivers but that doesn't make sense because this started happening all of a sudden on multiple computers. These are fully patched/updated Windows 10 Pro computers. The common thing we're seeing is Sophos was updated to version 2022.2.1.9 around 7/20/22 on all of them. Any insight from Sophos on if the blue screen of death crashes are being caused by the latest version of Sophos? 



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[edited by: Gladys at 3:07 PM (GMT -7) on 5 Aug 2022]
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  • In the meantime we did provide two full memory dumps from two different users and machines this monday.

    I did not hear back since, and we still don't have access to the test driver. I assume they are checking if our cases have the same or a similar reason, and if the test driver even addresses that same issue or not.

    Also after providing the dumps I enabled the full workaround solution according to the KB for the "known-to-be-affected" users.
    Only to learn yesterday, that the workaround - although making the issue less frequent - does not reliably work. One of the users just had another BSOD. Thankfully he was set up to provide memory dumps, so Sophos engineers now got a 3rd full dump with SDU logs for a case that is NOT mitigated by the "turn off security" workaround.

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