CVE-2025-71186
dmaengine: stm32: dmamux: fix device leak on route allocation
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.
INFO
Published Date :
Jan. 31, 2026, 12:16 p.m.
Last Modified :
March 25, 2026, 6:43 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Drop reference to device after DMA mux lookup.
- Update the Linux kernel to the latest stable version.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-71186.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-71186 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-71186
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-71186 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-71186 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Mar. 25, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-401 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:4.15:-:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.7 *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:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.199 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.162 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.122 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.67 *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:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15.1 up to (excluding) 5.10.249 Added Reference Type kernel.org: https://git.kernel.org/stable/c/1a179ac01ff3993ab97e33cc77c316ed7415cda1 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/1dda2a32303df0091896b01a9d09070d61fa344c Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/2fb10259d4efb4367787b5ae9c94192e8a91c648 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/3b42020e6790a5e19b36c187ed5b488a5716f97f Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/3ef52d31cce8ba816739085a61efe07b63c6cf27 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/6393da54dcb3488c080a183c4182ddec71ba8d7f Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/dd6e4943889fb354efa3f700e42739da9bddb6ef Types: Patch -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 06, 2026
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/1dda2a32303df0091896b01a9d09070d61fa344c Added Reference https://git.kernel.org/stable/c/3b42020e6790a5e19b36c187ed5b488a5716f97f Added Reference https://git.kernel.org/stable/c/6393da54dcb3488c080a183c4182ddec71ba8d7f -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jan. 31, 2026
Action Type Old Value New Value 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. Added Reference https://git.kernel.org/stable/c/1a179ac01ff3993ab97e33cc77c316ed7415cda1 Added Reference https://git.kernel.org/stable/c/2fb10259d4efb4367787b5ae9c94192e8a91c648 Added Reference https://git.kernel.org/stable/c/3ef52d31cce8ba816739085a61efe07b63c6cf27 Added Reference https://git.kernel.org/stable/c/dd6e4943889fb354efa3f700e42739da9bddb6ef