---
title: "CVE-2026-93170: Linux kernel dmaengine xilinx_dma - Race Condition"
description: "Linux kernel dmaengine xilinx_dma contains a race condition in AXIDMA and MCDMA interrupt handlers causing incorrect channel idle state management, letting attackers cause descriptor corruption or missed completions, exploit requires multiple queued descriptors."
url: https://panop.io/threat-heartbeat/CVE-2026-93170/
---

# CVE-2026-93170 Linux kernel dmaengine xilinx\_dma - Race Condition

Linux kernel dmaengine xilinx\_dma contains a race condition in AXIDMA and MCDMA interrupt handlers causing incorrect channel idle state management, letting attackers cause descriptor corruption or missed completions, exploit requires multiple queued descriptors.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.18% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-93170)

## Details

Type

Race Condition

Impact

Data Tampering, Denial Of Service

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Published

17 September 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version containing the fix for xilinx\_dma channel idle state management.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-93170](https://nvd.nist.gov/vuln/detail/CVE-2026-93170)
- [https://git.kernel.org/stable/c/c3e943490ced0b9ad475844eda7661f6a9bcfb4a](https://git.kernel.org/stable/c/c3e943490ced0b9ad475844eda7661f6a9bcfb4a)
- [https://git.kernel.org/stable/c/ec927657524be4438447944a58173c7baf7f2384](https://git.kernel.org/stable/c/ec927657524be4438447944a58173c7baf7f2384)
- [https://git.kernel.org/stable/c/fdaf297ab275c6efecac5e87669c31bc89b74297](https://git.kernel.org/stable/c/fdaf297ab275c6efecac5e87669c31bc89b74297)
- [https://git.kernel.org/stable/c/0b6d055edb55ecadadf54e930c2b4fab76fa9a5a](https://git.kernel.org/stable/c/0b6d055edb55ecadadf54e930c2b4fab76fa9a5a)
- [https://git.kernel.org/stable/c/425630e9eea1f9f8912b8c6abf01e0dab1e27917](https://git.kernel.org/stable/c/425630e9eea1f9f8912b8c6abf01e0dab1e27917)
- [https://git.kernel.org/stable/c/5459e02707b27a964ae72e028d3ff72a3b687c4a](https://git.kernel.org/stable/c/5459e02707b27a964ae72e028d3ff72a3b687c4a)
- [https://git.kernel.org/stable/c/7f4b989d7d87381927b98d64492f8dcf979f57ab](https://git.kernel.org/stable/c/7f4b989d7d87381927b98d64492f8dcf979f57ab)
- [https://git.kernel.org/stable/c/c27d16fd2358b2fc3e1ffaca03afd11dc28630ea](https://git.kernel.org/stable/c/c27d16fd2358b2fc3e1ffaca03afd11dc28630ea)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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