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NVD / CVE Program· CNA Linux

CVE-2025-38404: usb: typec: displayport: Fix potential deadlock

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: 0.15% (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 099cf1fbb8afc3771f408109f62bdec66f85160e, 6.1.144, 6.12.37; azl3 kernel 6.6.96.2-2 on Azure Linux 3.0 6.6.104.2-1.

Low priority for now. Upgrade to Linux Linux 099cf1fbb8afc3771f408109f62bdec66f85160e, 6.1.144, 6.12.37; azl3 kernel 6.6.96.2-2 on Azure Linux 3.0 6.6.104.2-1 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: usb: typec: displayport: Fix potential deadlock The deadlock can occur due to a recursive lock acquisition of `cros_typec_altmode_data::mutex`. The call chain is as follows: 1. cros_typec_altmode_work() acquires the mutex 2. typec_altmode_vdm() -> dp_altmode_vdm() -> 3. typec_altmode_exit() -> cros_typec_altmode_exit() 4. cros_typec_altmode_exit() attempts to acquire the mutex again To prevent this, defer the `typec_altmode_exit()` call by scheduling it rather than calling it directly from within the mutex-protected context.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Jul 25, 2025
Updated
Jun 17, 2026
EPSS
0.1% · 4th 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 · 0.1%

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

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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

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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.

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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
debiandebian linux

Affected versions

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

  • debian debian linux11.0
  • linux linux kernel6.1.143
  • linux linux kernel6.12.36
  • linux linux kernel6.15.5
  • linux linux kernel6.16
  • linux linux kernel6.6.96

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

    • e0359c66c1beccbe90119a63391678eabda38007 and later · before 749d9076735fb497aae60fbea9fff563f9ea3254affected · git
    • e3fb6c2c3939b4aad203cacdd613a62ce1fd032c and later · before eb08fca56f1f39e4038cb9bac9864464b13b00aaaffected · git
    • 56846793f105cf2b39ecbde4f3ae86342091f6fc and later · before 7be0d1ea71f52595499da39cea484a895e8ed042affected · git
    • 8e8a69b1f8c59f0505f8a1c0fb77191f27b75011 and later · before 76cf1f33e7319fe74c94ac92f9814094ee8cc84baffected · git
    • 8851e40587013db00b71d4aeaae30f5fd59b0eec and later · before 63cff9f57e86b2dc25d7487ca0118df89a665296affected · git
    • 10cc2cfd3e5d0e0ec7590c4bee8bcea10e5492c4 and later · before c782f98eef14197affa8a7b91e6981420f109ea9affected · git
    • 8f6a4fa7b663468bb304cb885b93326e025ae005 and later · before 80c25d7916a44715338d4f8924c8e52af50d0b9faffected · git
    • b4b38ffb38c91afd4dc387608db26f6fc34ed40b and later · before 099cf1fbb8afc3771f408109f62bdec66f85160eaffected · git
    • 6.1.143 and later · before 6.1.144affected · semver
    • 6.6.96 and later · before 6.6.97affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.147-16.1.147-1
Debian:13linuxbefore 6.12.37-16.12.37-1

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-2025-38402Jul 25, 2025 · idpf: return 0 size for RSS key if not supported
    22Monitor
  • ← EarlierCVE-2025-38403Jul 25, 2025 · vsock/vmci: Clear the vmci transport packet properly when initializing it
    31Monitor
  • Later →CVE-2025-38406Jul 25, 2025 · wifi: ath6kl: remove WARN on bad firmware input
    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 Linux099cf1fbb8afc3771f408109f62bdec66f85160eVendor (CNA)
Linux Linux6.1.144Vendor (CNA)
Linux Linux6.12.37Vendor (CNA)
Linux Linux6.15.6Vendor (CNA)
Linux Linux6.6.97Vendor (CNA)
Linux Linux63cff9f57e86b2dc25d7487ca0118df89a665296Vendor (CNA)
Linux Linux749d9076735fb497aae60fbea9fff563f9ea3254Vendor (CNA)
Linux Linux76cf1f33e7319fe74c94ac92f9814094ee8cc84bVendor (CNA)
Linux Linux7be0d1ea71f52595499da39cea484a895e8ed042Vendor (CNA)
Linux Linux80c25d7916a44715338d4f8924c8e52af50d0b9fVendor (CNA)
Linux Linuxc782f98eef14197affa8a7b91e6981420f109ea9Vendor (CNA)
Linux Linuxeb08fca56f1f39e4038cb9bac9864464b13b00aaVendor (CNA)
azl3 kernel 6.6.96.2-2 on Azure Linux 3.06.6.104.2-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.147-1 · 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.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

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-667 · Improper Locking

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.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (9 more)

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

All records