CVE-2025-38005

Kernel service interruption via unlocked DMA completion

Published Jun 18, 2025 · Updated Aug 5, 2026

Improper locking in the Linux TI K3 UDMA driver allows local users to interrupt service through concurrent DMA completion handling. The udma_check_tx_completion worker inspects descriptor state and starts or completes transfers without holding uc->vc.lock. Reachability requires a TI K3 SoC using the driver and a local device consumer; affected execution can destabilize or crash the kernel.

CVSS severity7.8
High
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper locking in the Linux TI K3 UDMA driver allows local users to interrupt service through concurrent DMA completion handling. The udma_check_tx_completion worker inspects descriptor state and starts or completes transfers without holding uc->vc.lock. Reachability requires a TI K3 SoC using the driver and a local device consumer; affected execution can destabilize or crash the kernel.

The record

CVE
CVE-2025-38005
Published
Jun 18, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-414, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 2025CVE 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

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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=25dcb5dd7b7ce5587c1df18f584ff78f51a68a94 <0ea0433f822ed0549715f7044c9cd1cf132ff7fa
  2. Affected versionversion=25dcb5dd7b7ce5587c1df18f584ff78f51a68a94 <26e63b2fe30c61bd25981c6084f67a8af79945d0
  3. Affected versionversion=25dcb5dd7b7ce5587c1df18f584ff78f51a68a94 <27e71fa08711e09d81e06a54007b362a5426fd22
  4. Affected versionversion=25dcb5dd7b7ce5587c1df18f584ff78f51a68a94 <99df1edf17493cb49a8c01f6bde55c3abb6a2a6c
  5. Affected versionversion=25dcb5dd7b7ce5587c1df18f584ff78f51a68a94 <d87f1cddc592387359fde157cc4296556f6403c2
  6. Affected versionversion=25dcb5dd7b7ce5587c1df18f584ff78f51a68a94 <df5987e76a4ae4cbd705d81ab4b15ed232250a4a
  7. Affected versionversion=25dcb5dd7b7ce5587c1df18f584ff78f51a68a94 <fca280992af8c2fbd511bc43f65abb4a17363f2f
  8. Affected versionversion=5.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=25dcb5dd7b7ce5587c1df18f584ff78f51a68a94 <0ea0433f822ed0549715f7044c9cd1cf132ff7fa; version=25dcb5dd7b7ce5587c1df18f584ff78f51a68a94 <26e63b2fe30c61bd25981c6084f67a8af79945d0; version=25dcb5dd7b7ce5587c1df18f584ff78f51a68a94 <27e71fa08711e09d81e06a54007b362a5426fd22; version=25dcb5dd7b7ce5587c1df18f584ff78f51a68a94 <99df1edf17493cb49a8c01f6bde55c3abb6a2a6c; version=25dcb5dd7b7ce5587c1df18f584ff78f51a68a94 <d87f1cddc592387359fde157cc4296556f6403c2; version=25dcb5dd7b7ce5587c1df18f584ff78f51a68a94 <df5987e76a4ae4cbd705d81ab4b15ed232250a4a; version=25dcb5dd7b7ce5587c1df18f584ff78f51a68a94 <fca280992af8c2fbd511bc43f65abb4a17363f2f; version=5.6

Published CVSS scores

3.3Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
7.8Linux CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5NVDCVSS: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-414Missing Lock Check
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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