serial: 8250: fix panic due to PSLVERR

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DEBIAN-CVE-2025-39724

In the Linux kernel, the following vulnerability has been resolved: serial: 8250: fix panic due to PSLVERR When the PSLVERRRESPEN parameter is set to 1, the device generates an error response if an attempt is made to read an empty RBR Receive Buffer Register while the FIFO is enabled. In...

UBUNTU-CVE-2025-39724

In the Linux kernel, the following vulnerability has been resolved: serial: 8250: fix panic due to PSLVERR When the PSLVERRRESPEN parameter is set to 1, the device generates an error response if an attempt is made to read an empty RBR Receive Buffer Register while the FIFO is enabled. In...

CVE-2025-39724

CVE-2025-39724 affects the Linux kernel serial 8250 driver. When PSLVERR_RESP_EN=1, an error response can be generated reading an empty RBR with FIFO enabled due to a race in serial8250_do_startup/DW paths. The fix wraps serial_port_out(port, UART_LCR, UART_LCR_WLEN8) under port->lock to preve...