CVE-2026-43353

A flaw was found in the Linux kernel's i3c: mipi-i3c-hci module. A race condition in the hci_dma_dequeue_xfer() function allows parallel calls to interfere with each other when multiple transfers time out concurrently. This interference can cause the DMA ring to stop or restart unexpectedly, potentially leading to system instability or a denial of service (DoS).

Red Hat acknowledges the upstream Linux kernel correction for «i3c» as described in COMMENT_ZERO. Fixes are delivered through standard kernel errata for supported products. Operational exposure depends on whether this subsystem or driver is active in your configuration.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

To mitigate this issue, prevent the i3c_mipi_i3c_hci module from being loaded. See https://access.redhat.com/solutions/41278 for instructions.