CVE-2026-46148

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the microchip-core-qspi driver where the built-in chip select is automatically operated by hardware. When multiple devices are attached to the QSPI controller, the built-in chip select may be set low while the system attempts to access a device attached via GPIO. This occurs because the automatic control sets the chip select low when active and high when inactive, which is incompatible with active-high devices or transfers requiring the chip select to be disabled. The fix involves modifying the driver to control the chip select directly and implementing the set cs() callback for regular transfers, while removing the mchp coreqspi setup op() callback and the modification of the CLKIDLE field to ensure stability during operation with multiple devices.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.