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.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Ubuntu | — | No solution existsUpgrade linux-image-nvidia-tegra-rt-6.8Upgrade linux-image-6.8.0-1035-nvidia-tegra-rtUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-6.8.0-1035-nvidia-tegraUpgrade linux-image-nvidia-tegra-6.8Upgrade linux-image-nvidia-tegra | Sep 21, 2026 | Sep 18, 2026 |
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