CyberRota Analysis
AI-GeneratedThe vulnerability affects the Belkin USB serial driver in the Linux kernel, where an improper validation of interrupt status length can lead to out-of-bounds reads. This flaw may allow attackers to exploit short interrupt transfers, potentially leading to information disclosure or system instability. Organizations using affected Linux systems, particularly those relying on Belkin USB serial devices, should prioritize patching to mitigate the risks associated with this vulnerability.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: USB: serial: belkin_sa: validate interrupt status length The Belkin interrupt callback treats interrupt data as a four-byte status report and reads LSR/MSR fields at offsets 2 and 3. The interrupt-in buffer length is derived from endpoint wMaxPacketSize, and short interrupt transfers may complete successfully with a smaller actual_length. Check the completed interrupt packet length before parsing status fields so short interrupt endpoints and short successful packets are ignored instead of causing out-of-bounds or stale status-byte reads. KASAN report as below: BUG: KASAN: slab-out-of-bounds in belkin_sa_read_int_callback() Read of size 1 Call trace: belkin_sa_read_int_callback() (drivers/usb/serial/belkin_sa.c:202) __usb_hcd_giveback_urb() (drivers/usb/core/hcd.c:1630) dummy_timer() (?:?)