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CVE-2026-43353

7.8 · HIGH

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 t…

Published May 8, 2026CWE-362EPSS 0.13%

Overview

CVE-2026-43353 is a high-severity vulnerability. It was published on May 8, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/1dca8aee80eea76d2aae21265de5dd64f6ba0f09Refgit.kernel.org/stable/c/4faa1e9c67a2229f6749190aedaf88ce0391efd2Refgit.kernel.org/stable/c/b684b420a5bb0ea1b0e13abfdb8ce41c5266e62e

How CyberStrike helps

Frequently asked questions

What is CVE-2026-43353?

CVE-2026-43353 is a high-severity vulnerability. It was published on May 8, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-43353?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-43353?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-43353?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-43353 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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