bs_i2c64.sys

bs_i2c64.sys is a kernel driver signed by Biostar, shipped with the temperature and hardware-monitoring software for Biostar motherboards. It gives that software low-level bus access to read sensors. A sibling driver, BS_RCIO64.sys, comes from the same Biostar tooling and is catalogued alongside it.

It is on the public vulnerable-driver list for the low-level access its interface exposes, the same class of issue as other motherboard-vendor monitoring drivers. No single CVE is the anchor for this filename in the public record at the time of writing; it is listed for the access surface rather than a specific assigned vulnerability.

If you have a Biostar motherboard and its monitoring utilities, this driver is expected. As with all such drivers, keep the vendor software current, and treat the driver appearing without Biostar hardware as worth checking.

bs_i2c64.sys is listed as a known-vulnerable driver on the public LOLDrivers project. One distinct binary hash matching this filename is on record.