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.
Affected products
linux: linux kernel
References6
- git.kernel.org/stable/c/1dca8aee80eea76d2aae21265de5dd64f6ba0f09 Patch
- git.kernel.org/stable/c/4faa1e9c67a2229f6749190aedaf88ce0391efd2 Patch
- git.kernel.org/stable/c/b684b420a5bb0ea1b0e13abfdb8ce41c5266e62e Patch
- git.kernel.org/stable/c/16061383a9def977e4be908c7dcede9a8a4227fd
- git.kernel.org/stable/c/73bb6b15f1fd71479ed12b314876f3ce5935b80a
- git.kernel.org/stable/c/d2fa9b855c7b42b34b2fb32731bf533952370384
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 2 · as of 13 November 2026
- CWE
- CWE-362
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