MEDIUM 5.1 NVD
CVE-2026-108952
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_se
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.
References
- https://github.com/RT-Thread/rt-thread
- https://github.com/RT-Thread/rt-thread/blob/99428a1e7f7447955aa860f7c969273a12095b8f/compo
- https://github.com/RT-Thread/rt-thread/commit/ceef6e0ccd646aef61b907aeb9f29269d1caba50
- https://github.com/RT-Thread/rt-thread/issues/11739
- https://github.com/RT-Thread/rt-thread/pull/11770
This medium severity vulnerability with a CVSS score of 5.1 was published on 2026-10-12 via NVD.
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