CVE-2026-108952 — RT-Thread through 5.3.0 Memory Corruption via USB CDC VCOM Driver
RT-Thread through 5.3.0 contains a memory corruption vulnerability in the legacy USB CDC virtual COM port driver that aliases rx_ringbuffer as a Serial V2 rt_serial_rx_fifo in _…
Published: 2026-10-12 · CVSS: 5.1 · CVSS 4.0
RT-Thread through 5.3.0 contains a memory corruption vulnerability in the legacy USB CDC virtual COM port driver that aliases rx_ringbuffer as a Serial V2 rt_serial_rx_fifo in _function_enable(). A connected USB host configuring the CDC device triggers writes past the ring buffer into struct vcom members and an invalid rt_free() on close, causing denial of service.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7