CVE-2024-27409

Local system crash via unsynchronized HDMA doorbell

Published May 17, 2024 · Updated Aug 5, 2026

A race condition in the Linux kernel dw-edma HDMA driver allows local users to crash the system during a remote-setup DMA transfer. The driver rings the HDMA doorbell before a posted linked-list write is synchronized, allowing hardware to consume an incomplete descriptor. Low-privilege local access and an HDMA remote configuration are required; the reported consequence is availability loss, not data access.

CVSS severity7.8
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A race condition in the Linux kernel dw-edma HDMA driver allows local users to crash the system during a remote-setup DMA transfer. The driver rings the HDMA doorbell before a posted linked-list write is synchronized, allowing hardware to consume an incomplete descriptor. Low-privilege local access and an HDMA remote configuration are required; the reported consequence is availability loss, not data access.

The record

CVE
CVE-2024-27409
Published
May 17, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-366, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 17, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.5
  2. Affected versionversion=e74c39573d35e9ac441090ff8183aa3dc2540649 <17be6f5cb223f22e4733ed8fe8b2247cbb677716
  3. Affected versionversion=e74c39573d35e9ac441090ff8183aa3dc2540649 <227ef58a9b0c372efba422e8886a8015a1509eba
  4. Affected versionversion=e74c39573d35e9ac441090ff8183aa3dc2540649 <712a92a48158e02155b4b6b21e03a817f78c9b7e

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.5; version=e74c39573d35e9ac441090ff8183aa3dc2540649 <17be6f5cb223f22e4733ed8fe8b2247cbb677716; version=e74c39573d35e9ac441090ff8183aa3dc2540649 <227ef58a9b0c372efba422e8886a8015a1509eba; version=e74c39573d35e9ac441090ff8183aa3dc2540649 <712a92a48158e02155b4b6b21e03a817f78c9b7e

Published CVSS scores

7.8kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5Canonical UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-366Race Condition within a Thread
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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