Linux Kernel up to 6.6.121/6.12.66/6.18.6/6.19-rc5 dmaengine of_dma_xlate allocation of resources

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

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.6.121/6.12.66/6.18.6/6.19-rc5. It has been rated as critical. Affected is the function of_dma_xlate of the component dmaengine. The manipulation leads to allocation of resources. This vulnerability is referenced as CVE-2025-71191. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.6.121/6.12.66/6.18.6/6.19-rc5. This issue affects the function of_dma_xlate of the component dmaengine. The manipulation with an unknown input leads to a allocation of resources vulnerability. Using CWE to declare the problem leads to CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. Impacted is availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: dmaengine: at_hdmac: fix device leak on of_dma_xlate() Make sure to drop the reference taken when looking up the DMA platform device during of_dma_xlate() when releasing channel resources. Note that commit 3832b78b3ec2 ("dmaengine: at_hdmac: add missing put_device() call in at_dma_xlate()") fixed the leak in a couple of error paths but the reference is still leaking on successful allocation.

It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2025-71191 since 01/31/2026. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 297463 (Linux Distros Unpatched Vulnerability : CVE-2025-71191), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.6.122, 6.12.67, 6.18.7 or 6.19-rc6 eliminates this vulnerability. Applying the patch 987c71671367f42460689b78244d7b894c50999a/6a86cf2c09e149d5718a5b7090545f7566da9334/f3c23b7e941349505c3d40de2cc0acd93d9ac057/b9074b2d7a230b6e28caa23165e9d8bc0677d333 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 (297463), EUVD (EUVD-2025-206584) and CERT Bund (WID-SEC-2026-0280). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Open Source Linux Kernel

Productinfo

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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

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

Exploitinginfo

Class: Allocation of resources
CWE: CWE-770 / CWE-400 / 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: 297463
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-71191

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.6.122/6.12.67/6.18.7/6.19-rc6
Patch: 987c71671367f42460689b78244d7b894c50999a/6a86cf2c09e149d5718a5b7090545f7566da9334/f3c23b7e941349505c3d40de2cc0acd93d9ac057/b9074b2d7a230b6e28caa23165e9d8bc0677d333

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-2025-71191 (🔒)
GCVE (CVE): GCVE-0-2025-71191
GCVE (VulDB): GCVE-100-343595
EUVD: 🔒
CERT Bund: WID-SEC-2026-0280 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 01/31/2026 15:12
Updated: 03/26/2026 02:11
Changes: 01/31/2026 15:12 (59), 02/01/2026 01:18 (1), 02/01/2026 07:45 (2), 02/02/2026 18:12 (7), 03/26/2026 02:11 (11)
Complete: 🔍
Cache ID: 216::103

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