CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's handling of transmit credits in the io_edgeport USB serial driver, where the lack of validation for maximum transmit credits can lead to an out-of-bounds write in the ring buffer. This could potentially allow an attacker to exploit the flaw to corrupt memory or cause a denial of service. Organizations using affected Linux kernel versions, particularly those relying on the io_edgeport driver, should prioritize patching to mitigate potential risks.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: USB: serial: io_edgeport: cap received transmit credits The interrupt-status packet reports transmit credits returned by the device. edge_interrupt_callback() adds the 16-bit value to txCredits without checking maxTxCredits. edge_write() uses txCredits minus the software FIFO count as the amount of data that fits. Since the FIFO is allocated with maxTxCredits bytes, txCredits exceeding maxTxCredits can cause OOB write in ring buffer. Cap accumulated credits at maxTxCredits. Conforming devices should never hit the cap.