CVE-2025-38479

Kernel warning via freeing absent DMA IRQs

Published Apr 18, 2025 · Updated May 11, 2026

Denial of service in the Linux kernel fsl-edma driver from 6.11 allows local users to trigger a kernel warning and diagnostic dump. The fsl_edma_remove function calls devm_free_irq for txirq or errirq without checking whether that interrupt exists, although i.MX9 platforms have no error IRQ. Reachability requires an NXP i.MX9-class system using the driver and invocation of the device-removal path; the documented result is a warning and dump rather than a demonstrated reboot or data compromise.

CVSS severity7.8
High
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Linux kernel fsl-edma driver from 6.11 allows local users to trigger a kernel warning and diagnostic dump. The fsl_edma_remove function calls devm_free_irq for txirq or errirq without checking whether that interrupt exists, although i.MX9 platforms have no error IRQ. Reachability requires an NXP i.MX9-class system using the driver and invocation of the device-removal path; the documented result is a warning and dump rather than a demonstrated reboot or data compromise.

The record

CVE
CVE-2025-38479
Published
Apr 18, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 18, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=44eb827264de4f14d8317692441e13f5e2aadbf2 <38ff8769074db27387cb2323aaa751e59d168e6a
  2. Affected versionversion=44eb827264de4f14d8317692441e13f5e2aadbf2 <55e2dbe2ba787d4fc2306f6bb2f43fb32176e184
  3. Affected versionversion=44eb827264de4f14d8317692441e13f5e2aadbf2 <f3834d2d68749e4760c27325149765930ad876fd
  4. Affected versionversion=44eb827264de4f14d8317692441e13f5e2aadbf2 <fa70c4c3c580c239a0f9e83a14770ab026e8d820
  5. Affected versionversion=6.11

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=44eb827264de4f14d8317692441e13f5e2aadbf2 <38ff8769074db27387cb2323aaa751e59d168e6a; version=44eb827264de4f14d8317692441e13f5e2aadbf2 <55e2dbe2ba787d4fc2306f6bb2f43fb32176e184; version=44eb827264de4f14d8317692441e13f5e2aadbf2 <f3834d2d68749e4760c27325149765930ad876fd; version=44eb827264de4f14d8317692441e13f5e2aadbf2 <fa70c4c3c580c239a0f9e83a14770ab026e8d820; version=6.11

Published CVSS scores

7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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