CVE-2023-52456

A flaw was found in the UART driver handling RS485 communication in the Linux Kernel when an unexpected closure of the TTY port occurs, such as during a userland application crash. In this scenario, the imxuartshutdown function disables the UART interface and the Transmission Complete TC interrup...

Design/Logic Flaw

In the Linux kernel, the following vulnerability has been resolved: serial: imx: fix tx statemachine deadlock When using the serial port as RS485 port, the tx statemachine is used to control the RTS pin to drive the RS485 transceiver TXEN pin. When the TTY port is closed in the middle of a...

CVE-2023-52456

In the Linux kernel, the following vulnerability has been resolved: serial: imx: fix tx statemachine deadlock When using the serial port as RS485 port, the tx statemachine is used to control the RTS pin to drive the RS485 transceiver TXEN pin. When the TTY port is closed in the middle of a...

CVE-2023-52456 serial: imx: fix tx statemachine deadlock

In the Linux kernel, the following vulnerability has been resolved: serial: imx: fix tx statemachine deadlock When using the serial port as RS485 port, the tx statemachine is used to control the RTS pin to drive the RS485 transceiver TXEN pin. When the TTY port is closed in the middle of a...

CVE-2023-52456

CVE-2023-52456 affects the Linux kernel, specifically the imx serial driver used for RS-485 when the TX state machine can deadlock if the TTY is closed mid-transmission. In that scenario, imx_uart_shutdown disables the interface and the Transmission Complete interrupt, causing imx_uart_stop_tx to...