5.5

CVE-2025-71186: dmaengine: stm32: dmamux: fix device leak on route allocation

Modified
AliasesUBUNTU-CVE-2025-71186DEBIAN-CVE-2025-71186
Published 31-01-2026Last modified 15-10-2026

Vulnerability summary

CVE-2025-71186 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 12% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.21%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 38 · Related 32
DLA-4475-1DLA-4476-1DSA-6126-1DSA-6127-1MGASA-2026-0097MGASA-2026-0098

Timeline

  1. 31-01-2026
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

12%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.21% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu155 products
  • linuxAll versions (No fix recorded) | < 5.15.0-176.186 | < 6.8.0-117.117
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1105.112 | < 6.8.0-1055.58
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ df7e762db5f6c8dbd9e480f1c9ef9851de346657, < 3b42020e6790a5e19b36c187ed5b488a5716f97f | ≥ df7e762db5f6c8dbd9e480f1c9ef9851de346657, < 6393da54dcb3488c080a183c4182ddec71ba8d7f | ≥ df7e762db5f6c8dbd9e480f1c9ef9851de346657, < 1dda2a32303df0091896b01a9d09070d61fa344c | ≥ df7e762db5f6c8dbd9e480f1c9ef9851de346657, < 1a179ac01ff3993ab97e33cc77c316ed7415cda1 | ≥ df7e762db5f6c8dbd9e480f1c9ef9851de346657, < 2fb10259d4efb4367787b5ae9c94192e8a91c648 | ≥ df7e762db5f6c8dbd9e480f1c9ef9851de346657, < 3ef52d31cce8ba816739085a61efe07b63c6cf27 | ≥ df7e762db5f6c8dbd9e480f1c9ef9851de346657, < dd6e4943889fb354efa3f700e42739da9bddb6ef | 4.15
  • linux_kernel≥ 4.15.1, < 5.10.249 | ≥ 5.11, < 5.15.199 | ≥ 5.16, < 6.1.162 | ≥ 6.2, < 6.6.122 | ≥ 6.7, < 6.12.67 | ≥ 6.13, < 6.18.7 | 4.15 | 6.19:rc1 | 6.19:rc2 | 6.19:rc3 | 6.19:rc4 | 6.19:rc5 | 6.19:rc6 | 6.19:rc7 | 6.19:rc8
Debian1 product
  • linux< 6.1.162-1 | < 6.12.69-1 | < 6.18.8-1

3 vendors · 158 products

References

43 links
Show all 43 references