cyvrlpc.sys caused a bugcheck (BSOD) on Server 2012 R2

[Colton_Morrison]

We use Cortex XDR 7.5.x and unexpectedly we have at least 1 system which faulted the whole OS and it rebooted due to a bugcheck, blue screen of death. After debugging the minidump file, it indicates that cyvrlpc.sys caused this BSOD.

Why would this happen and what is the fix for it?

STACK_TEXT: 
ffffd000`204dd9e8 fffff802`ac5c4369 : 00000000`0000000a 00000000`00001bac 00000000`00000002 00000000`00000001 : nt!KeBugCheckEx
ffffd000`204dd9f0 fffff802`ac5c18a8 : 00000000`00000000 ffffd000`204dde30 00000000`00001b00 00000000`00000000 : nt!KiBugCheckDispatch+0x69
ffffd000`204ddb30 fffff800`7f363fab : 00000000`00001b7c 00000000`c0000001 fffff800`7f36419d fffff800`7f363f90 : nt!KiPageFault+0x428
ffffd000`204ddcc0 00000000`00001b7c : 00000000`c0000001 fffff800`7f36419d fffff800`7f363f90 00000000`00000000 : cyvrlpc+0x6fab
ffffd000`204ddcc8 00000000`c0000001 : fffff800`7f36419d fffff800`7f363f90 00000000`00000000 fffff800`7fa9b669 : 0x1b7c
ffffd000`204ddcd0 fffff800`7f36419d : fffff800`7f363f90 00000000`00000000 fffff800`7fa9b669 00000000`00000000 : 0xc0000001
ffffd000`204ddcd8 fffff800`7f363f90 : 00000000`00000000 fffff800`7fa9b669 00000000`00000000 00000000`00000000 : cyvrlpc+0x719d
ffffd000`204ddce0 00000000`00000000 : fffff800`7fa9b669 00000000`00000000 00000000`00000000 00000000`c0000001 : cyvrlpc+0x6f90


SYMBOL_NAME: cyvrlpc+6fab

MODULE_NAME: cyvrlpc

IMAGE_NAME: cyvrlpc.sys

STACK_COMMAND: .cxr; .ecxr ; kb

BUCKET_ID_FUNC_OFFSET: 6fab

FAILURE_BUCKET_ID: AV_cyvrlpc!unknown_function

OS_VERSION: 8.1.9600.20111

BUILDLAB_STR: winblue_ltsb_escrow

OSPLATFORM_TYPE: x64

OSNAME: Windows 8.1

FAILURE_ID_HASH: {0fc72d13-6423-850c-8f53-c5a94f8b0d14}

[jcandelaria]

Hi Colton_Morrison,

This would be a support case, where our support needs to investigate. Also have you tried updating the agent on this server?