CVE-2026-43353
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 9ad9a52cce2828d932ae9495181e3d6414f72c07 < b684b420a5bb0ea1b0e13abfdb8ce41c5266e62e | affected |
| Linux | Linux | 9ad9a52cce2828d932ae9495181e3d6414f72c07 < 4faa1e9c67a2229f6749190aedaf88ce0391efd2 | affected |
| Linux | Linux | 9ad9a52cce2828d932ae9495181e3d6414f72c07 < 1dca8aee80eea76d2aae21265de5dd64f6ba0f09 | affected |
| Linux | Linux | 5.11 | affected |
| Linux | Linux | 0 < 5.11 | unaffected |
| Linux | Linux | 6.18.19 <= 6.18.* | unaffected |
| Linux | Linux | 6.19.9 <= 6.19.* | unaffected |
| Linux | Linux | 7.0 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/b684b420a5bb0ea1b0e13abfdb8ce41c5266e62e
- https://git.kernel.org/stable/c/4faa1e9c67a2229f6749190aedaf88ce0391efd2
- https://git.kernel.org/stable/c/1dca8aee80eea76d2aae21265de5dd64f6ba0f09
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