EUVD-2026-28659
GHSA-473v-h78r-2j73
CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
5DescriptionNVD
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.
AnalysisAI
Race condition in Linux kernel I3C HCI DMA dequeue handler allows local authenticated attackers with low privileges to trigger memory corruption leading to privilege escalation, denial of service, or information disclosure. The vulnerability affects kernel versions from 5.11 onwards where the mipi-i3c-hci driver is enabled. …
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RemediationAI
Within 24 hours: Identify all systems running Linux kernels 5.11 through 7.0 with mipi-i3c-hci driver enabled using kernel module enumeration tools. Within 7 days: Schedule patching to kernel versions 6.18.19, 6.19.9, or 7.0 (whichever matches your supported branch) and test in pre-production environments. …
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