CVE-2025-71186

dmaengine: stm32: dmamux: fix device leak on route allocation

Published Jan 31, 2026 CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Description
In the Linux kernel, the following vulnerability has been resolved:

dmaengine: stm32: dmamux: fix device leak on route allocation

Make sure to drop the reference taken when looking up the DMA mux
platform device during route allocation.

Note that holding a reference to a device does not prevent its driver
data from going away so there is no point in keeping the reference.

Analysis

No analysis available yet

Remediation

No remediation available yet

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4475-1 linux security update
Debian DLA Debian DLA DLA-4476-1 linux-6.1 security update
Debian DSA Debian DSA DSA-6126-1 linux security update
Debian DSA Debian DSA DSA-6127-1 linux security update
Ubuntu USN Ubuntu USN USN-8162-1 Linux kernel (NVIDIA Tegra) vulnerabilities
Ubuntu USN Ubuntu USN USN-8180-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-8180-2 Linux kernel (FIPS) vulnerabilities
Ubuntu USN Ubuntu USN USN-8186-1 Linux kernel (Real-time) vulnerabilities
Ubuntu USN Ubuntu USN USN-8187-1 Linux kernel (NVIDIA) vulnerabilities
Ubuntu USN Ubuntu USN USN-8188-1 Linux kernel (HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-8180-3 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-8180-4 Linux kernel (Azure FIPS) vulnerabilities
Ubuntu USN Ubuntu USN USN-8180-5 Linux kernel (IBM) vulnerabilities
Ubuntu USN Ubuntu USN USN-8243-1 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-8180-6 Linux kernel (Raspberry Pi) vulnerabilities
Ubuntu USN Ubuntu USN USN-8275-1 Linux kernel (Xilinx ZynqMP) vulnerabilities
Ubuntu USN Ubuntu USN USN-8278-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-8289-1 Linux kernel (NVIDIA) vulnerabilities
Ubuntu USN Ubuntu USN USN-8296-1 Linux kernel (FIPS) vulnerabilities
Ubuntu USN Ubuntu USN USN-8297-1 Linux kernel (GCP) vulnerabilities
Ubuntu USN Ubuntu USN USN-8296-2 Linux kernel (NVIDIA Tegra) vulnerabilities
Ubuntu USN Ubuntu USN USN-8278-2 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-8440-1 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-8499-1 Linux kernel (Xilinx) vulnerabilities
Ubuntu USN Ubuntu USN USN-8570-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-8594-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-8604-1 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-8605-1 Linux kernel (Azure CVM) vulnerabilities
Ubuntu USN Ubuntu USN USN-8570-2 Linux kernel (Oracle) vulnerabilities
Ubuntu USN Ubuntu USN USN-8289-2 Linux kernel (NVIDIA) vulnerabilities
Ubuntu USN Ubuntu USN USN-8393-1 Linux kernel (Azure FIPS) vulnerabilities
Ubuntu USN Ubuntu USN USN-8669-1 Linux kernel (NVIDIA) vulnerabilities
History
Type Values Removed Values Added
Weaknesses CWE-401
CPEs cpe:2.3:o:linux:linux_kernel:4.15:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc8:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: dmaengine: stm32: dmamux: fix device leak on route allocation Make sure to drop the reference taken when looking up the DMA mux platform device during route allocation. Note that holding a reference to a device does not prevent its driver data from going away so there is no point in keeping the reference.
Title dmaengine: stm32: dmamux: fix device leak on route allocation
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References
Weaknesses
  • CWE-401

    Missing Release of Memory after Effective Lifetime

Sources

Status
PUBLISHED
Assigner
Linux
Published
Updated
Nov 10, 2026, 12:39 PM
Reserved
Jan 31, 2026, 11:36 AM
Status
Modified
Published
Jan 31, 2026, 12:16 PM
Modified
Nov 10, 2026, 1:18 PM
Severity
Public date
Jan 31, 2026, 12:00 AM