Linux Kernel up to 6.18.6/6.19-rc5 dmaengine memory leak

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Linux Kernel up to 6.18.6/6.19-rc5. The affected element is an unknown function of the component dmaengine. The manipulation leads to memory leak. This vulnerability is listed as CVE-2025-71187. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 6.18.6/6.19-rc5. This issue affects an unknown code of the component dmaengine. The manipulation with an unknown input leads to a memory leak vulnerability. Using CWE to declare the problem leads to CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. Impacted is availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: dmaengine: sh: rz-dmac: fix device leak on probe failure Make sure to drop the reference taken when looking up the ICU device during probe also on probe failures (e.g. probe deferral).

The advisory is shared at git.kernel.org. The identification of this vulnerability is CVE-2025-71187 since 01/31/2026. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 297469 (Linux Distros Unpatched Vulnerability : CVE-2025-71187), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.18.7 or 6.19-rc6 eliminates this vulnerability. Applying the patch 926d1666420c227eab50962a8622c1b8444720e8/9fb490323997dcb6f749cd2660a17a39854600cd is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (297469), EUVD (EUVD-2025-206588) and CERT Bund (WID-SEC-2026-0280). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

  • Open Source Linux Kernel

Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory leak
CWE: CWE-401 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 297469
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-71187

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.18.7/6.19-rc6
Patch: 926d1666420c227eab50962a8622c1b8444720e8/9fb490323997dcb6f749cd2660a17a39854600cd

Timelineinfo

01/31/2026 Advisory disclosed
01/31/2026 +0 days CVE reserved
01/31/2026 +0 days VulDB entry created
03/26/2026 +54 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-71187 (🔒)
GCVE (CVE): GCVE-0-2025-71187
GCVE (VulDB): GCVE-100-343613
EUVD: 🔒
CERT Bund: WID-SEC-2026-0280 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 01/31/2026 15:22
Updated: 03/26/2026 01:17
Changes: 01/31/2026 15:22 (58), 02/01/2026 01:18 (1), 02/01/2026 07:45 (2), 02/02/2026 16:08 (7), 03/26/2026 01:17 (11)
Complete: 🔍
Cache ID: 216::103

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