GHSA-473V-H78R-2J73
Vulnerability from github – Published: 2026-05-08 15:31 – Updated: 2026-05-11 09:30In 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": [],
"aliases": [
"CVE-2026-43353"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-08T15:16:46Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ni3c: mipi-i3c-hci: Fix race in DMA ring dequeue\n\nThe HCI DMA dequeue path (hci_dma_dequeue_xfer()) may be invoked for\nmultiple transfers that timeout around the same time. However, the\nfunction is not serialized and can race with itself.\n\nWhen a timeout occurs, hci_dma_dequeue_xfer() stops the ring, processes\nincomplete transfers, and then restarts the ring. If another timeout\ntriggers a parallel call into the same function, the two instances may\ninterfere with each other - stopping or restarting the ring at unexpected\ntimes.\n\nAdd a mutex so that hci_dma_dequeue_xfer() is serialized with respect to\nitself.",
"id": "GHSA-473v-h78r-2j73",
"modified": "2026-05-11T09:30:30Z",
"published": "2026-05-08T15:31:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43353"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1dca8aee80eea76d2aae21265de5dd64f6ba0f09"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4faa1e9c67a2229f6749190aedaf88ce0391efd2"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b684b420a5bb0ea1b0e13abfdb8ce41c5266e62e"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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