CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's USB serial driver for Digi AccelePort devices, where improper handling of write buffer operations can lead to buffer corruption. This flaw may allow attackers to exploit the driver, potentially leading to system instability or unauthorized access. Organizations using affected Linux systems, particularly those relying on Digi AccelePort hardware, should prioritize applying the patch to mitigate the risk.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: USB: serial: digi_acceleport: fix write buffer corruption The digi_write_inb_command() is supposed to wait for the write urb to become available or return an error, but instead it updates the transfer buffer and tries to resubmit the urb on timeout. To make things worse, for commands like break control where no timeout is used, the driver would corrupt the urb immediately due to a broken jiffies comparison (on 32-bit machines this takes five minutes of uptime to trigger due to INITIAL_JIFFIES). Fix this by adding the missing return on timeout and waiting indefinitely when no timeout has been specified as intended. This issue was (sort of) flagged by Sashiko when reviewing an unrelated change to the driver.