Skip to content
Noroxi
NVD / CVE Program· CNA Linux

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

MediumCVSS 5.5 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.21% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 1a179ac01ff3993ab97e33cc77c316ed7415cda1, 1dda2a32303df0091896b01a9d09070d61fa344c, 2fb10259d4efb4367787b5ae9c94192e8a91c648.

Low priority for now. Upgrade to Linux Linux 1a179ac01ff3993ab97e33cc77c316ed7415cda1, 1dda2a32303df0091896b01a9d09070d61fa344c, 2fb10259d4efb4367787b5ae9c94192e8a91c648 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

Published
Jan 31, 2026
Updated
Nov 10, 2026
EPSS
0.2% · 12th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2025-71186

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits every 10 minutes on paid plans, on the hour on the free plan.

Your free account also gets you

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools, at most 30 a day (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for linux records
Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 4.15affected
    • df7e762db5f6c8dbd9e480f1c9ef9851de346657 and later · before 3b42020e6790a5e19b36c187ed5b488a5716f97faffected · git
    • df7e762db5f6c8dbd9e480f1c9ef9851de346657 and later · before 6393da54dcb3488c080a183c4182ddec71ba8d7faffected · git
    • df7e762db5f6c8dbd9e480f1c9ef9851de346657 and later · before 1dda2a32303df0091896b01a9d09070d61fa344caffected · git
    • df7e762db5f6c8dbd9e480f1c9ef9851de346657 and later · before 1a179ac01ff3993ab97e33cc77c316ed7415cda1affected · git
    • df7e762db5f6c8dbd9e480f1c9ef9851de346657 and later · before 2fb10259d4efb4367787b5ae9c94192e8a91c648affected · git
    • df7e762db5f6c8dbd9e480f1c9ef9851de346657 and later · before 3ef52d31cce8ba816739085a61efe07b63c6cf27affected · git
    • df7e762db5f6c8dbd9e480f1c9ef9851de346657 and later · before dd6e4943889fb354efa3f700e42739da9bddb6efaffected · git
    • before 4.15not affected · semver
    • 5.10.249 and later · up to and including 5.10.*not affected · semver
Affected versions · NVD (8)

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel4.15.1 and later · before 5.10.249
  • linux linux kernel5.11 and later · before 5.15.199
  • linux linux kernel5.16 and later · before 6.1.162
  • linux linux kernel6.2 and later · before 6.6.122
  • linux linux kernel6.7 and later · before 6.12.67
  • linux linux kernel6.13 and later · before 6.18.7
  • linux linux kernel4.15
  • linux linux kernel6.19

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.162-16.1.162-1
Debian:13linuxbefore 6.12.69-16.12.69-1
Debian:14linuxbefore 6.18.8-16.18.8-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe…KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2025-71184Jan 31, 2026 · btrfs: fix NULL dereference on root when tracing inode eviction
    22Monitor
  • ← EarlierCVE-2025-71185Jan 31, 2026 · dmaengine: ti: dma-crossbar: fix device leak on am335x route allocation
    22Monitor
  • Later →CVE-2025-71189Jan 31, 2026 · dmaengine: dw: dmamux: fix OF node leak on route allocation failure
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux1a179ac01ff3993ab97e33cc77c316ed7415cda1Vendor (CNA)
Linux Linux1dda2a32303df0091896b01a9d09070d61fa344cVendor (CNA)
Linux Linux2fb10259d4efb4367787b5ae9c94192e8a91c648Vendor (CNA)
Linux Linux3b42020e6790a5e19b36c187ed5b488a5716f97fVendor (CNA)
Linux Linux3ef52d31cce8ba816739085a61efe07b63c6cf27Vendor (CNA)
Linux Linux6393da54dcb3488c080a183c4182ddec71ba8d7fVendor (CNA)
Linux Linuxdd6e4943889fb354efa3f700e42739da9bddb6efVendor (CNA)
debian:linux6.1.162-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-401 · Missing Release of Memory after Effective Lifetime

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Show all references (9 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records