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CVE-2026-108952

5.1 medium SSVC exploitation: none Deferred
NVD · CVE.org

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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 2

  1. StatusReceived → DeferredNVD modified 2026-10-16 19:18
  2. First seenCVSS 5.1NVD modified 2026-10-13 15:17

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 6