CVE-2026-43353i3c: mipi-i3c-hci: Fix race in DMA ring dequeue
Updated under an hour ago ()
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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
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 21, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 9ad9a52cce2828d932ae9495181e3d6414f72c07 before 73bb6b15f1fd71479ed12b314876f3ce5935b80a; from 9ad9a52cce2828d932ae9495181e3d6414f72c07 before 16061383a9def977e4be908c7dcede9a8a4227fd; from 9ad9a52cce2828d932ae9495181e3d6414f72c07 before b684b420a5bb0ea1b0e13abfdb8ce41c5266e62e; 9ad9a52cce2828d932ae9495181e3d6414f72c07 builds before 4faa1e9c67a2229f6749190aedaf88ce0391efd2; 9ad9a52cce2828d932ae9495181e3d6414f72c07 builds before 1dca8aee80eea76d2aae21265de5dd64f6ba0f09 | CNA record |
linux linux_kernel linux:linux_kernel | from 5.11 before 6.18.19; from 6.19 before 6.19.9; 7.0; 7.0; 7.0 | NVD |
References
- https://git.kernel.org/stable/c/73bb6b15f1fd71479ed12b314876f3ce5935b80a
- https://git.kernel.org/stable/c/16061383a9def977e4be908c7dcede9a8a4227fd
- https://git.kernel.org/stable/c/b684b420a5bb0ea1b0e13abfdb8ce41c5266e62epatch
- https://git.kernel.org/stable/c/4faa1e9c67a2229f6749190aedaf88ce0391efd2patch
- https://git.kernel.org/stable/c/1dca8aee80eea76d2aae21265de5dd64f6ba0f09patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.