CVE-2026-43353

Published: May 9, 2026Last modified: May 9, 2026

Description

In the Linux kernel, the following vulnerability has been resolved: i3c: mipi-i3c-hci: Fix race in DMA ring dequeue The HCI DMA dequeue path (hci_dma_dequeue_xfer()) may be invoked for multiple transfers that timeout around the same time. However, the function is not serialized and can race with itself. When a timeout occurs, hci_dma_dequeue_xfer() stops the ring, processes incomplete transfers, and then restarts the ring. If another timeout triggers a parallel call into the same function, the two instances may interfere with each other - stopping or restarting the ring at unexpected times. Add a mutex so that hci_dma_dequeue_xfer() is serialized with respect to itself.

Severity score breakdown

Status

References

• https://git.kernel.org/stable/c/1dca8aee80eea76d2aae21265de5dd64f6ba0f09
• https://git.kernel.org/stable/c/4faa1e9c67a2229f6749190aedaf88ce0391efd2
• https://git.kernel.org/stable/c/b684b420a5bb0ea1b0e13abfdb8ce41c5266e62e