When you install Symantec Endpoint Protection (SEP) 14.3 RU6 on RedHat Enterprise Linux (RHEL) 9.0, the status of sisevt and sisap kernel modules is "not loaded".
Broadcom is aware of this issue and will update this document when a solution becomes available.
As a workaround, consider downgrading kernel version between 5.14.0-70.13.1 and 5.14.0-70.30.1.
CRE-15277