CVE-2026-43353
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
08/05/2026
Last modified:
12/05/2026
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
i3c: mipi-i3c-hci: Fix race in DMA ring dequeue<br />
<br />
The HCI DMA dequeue path (hci_dma_dequeue_xfer()) may be invoked for<br />
multiple transfers that timeout around the same time. However, the<br />
function is not serialized and can race with itself.<br />
<br />
When a timeout occurs, hci_dma_dequeue_xfer() stops the ring, processes<br />
incomplete transfers, and then restarts the ring. If another timeout<br />
triggers a parallel call into the same function, the two instances may<br />
interfere with each other - stopping or restarting the ring at unexpected<br />
times.<br />
<br />
Add a mutex so that hci_dma_dequeue_xfer() is serialized with respect to<br />
itself.
Impact
Base Score 3.x
7.80
Severity 3.x
HIGH