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NVD / CVE Program· CNA Linux

CVE-2025-37967: usb: typec: ucsi: displayport: Fix 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 364618c89d4c57c85e5fc51a2446cd939bf57802, 5924b324468845fc795bd76f588f51d7ab4f202d, 61fc1a8e1e10cc784cab5829930838aaf1d37af5; Azure Linux 3.0 ARM 6.6.92.2-1; Azure Linux 3.0 x64 6.6.92.2-1.

Low priority for now. Upgrade to Linux Linux 364618c89d4c57c85e5fc51a2446cd939bf57802, 5924b324468845fc795bd76f588f51d7ab4f202d, 61fc1a8e1e10cc784cab5829930838aaf1d37af5; Azure Linux 3.0 ARM 6.6.92.2-1; Azure Linux 3.0 x64 6.6.92.2-1 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: ucsi: displayport: Fix deadlock This patch introduces the ucsi_con_mutex_lock / ucsi_con_mutex_unlock functions to the UCSI driver. ucsi_con_mutex_lock ensures the connector mutex is only locked if a connection is established and the partner pointer is valid. This resolves a deadlock scenario where ucsi_displayport_remove_partner holds con->mutex waiting for dp_altmode_work to complete while dp_altmode_work attempts to acquire it.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
May 20, 2025
Updated
Nov 5, 2026
EPSS
0.1% · 5th 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%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

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-2025-37967

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 kernel5.16 and later · before 6.1.140
  • linux linux kernel6.2 and later · before 6.6.92
  • linux linux kernel5.2 and later · before 5.15.184
  • linux linux kernel6.13 and later · before 6.14.7
  • linux linux kernel6.7 and later · before 6.12.30
  • linux linux kernel6.15

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

    • 5.2affected
    • af8622f6a585d8d82b11cd7987e082861fd0edd3 and later · before f4bd982563c2fd41ec9ca6c517c392d759db801caffected · git
    • af8622f6a585d8d82b11cd7987e082861fd0edd3 and later · before f32451ca4cb7dc53f2a0e2e66b84d34162747eb7affected · git
    • af8622f6a585d8d82b11cd7987e082861fd0edd3 and later · before 962ce9028ca6eb450d5c205238a3ee27de9d214daffected · git
    • af8622f6a585d8d82b11cd7987e082861fd0edd3 and later · before 5924b324468845fc795bd76f588f51d7ab4f202daffected · git
    • af8622f6a585d8d82b11cd7987e082861fd0edd3 and later · before 61fc1a8e1e10cc784cab5829930838aaf1d37af5affected · git
    • af8622f6a585d8d82b11cd7987e082861fd0edd3 and later · before 364618c89d4c57c85e5fc51a2446cd939bf57802affected · git
    • before 5.2not affected · semver
    • 5.15.184 and later · up to and including 5.15.*not affected · semver
    • 6.1.140 and later · up to and including 6.1.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.140-16.1.140-1
Debian:13linuxbefore 6.12.30-16.12.30-1

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-2025-37963May 20, 2025 · arm64: bpf: Only mitigate cBPF programs loaded by unprivileged users
    22Monitor
  • ← EarlierCVE-2025-37964May 20, 2025 · x86/mm: Eliminate window where TLB flushes may be inadvertently skipped
    22Monitor
  • Later →CVE-2025-37972May 20, 2025 · Input: mtk-pmic-keys - fix possible null pointer dereference
    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 Linux364618c89d4c57c85e5fc51a2446cd939bf57802Vendor (CNA)
Linux Linux5924b324468845fc795bd76f588f51d7ab4f202dVendor (CNA)
Linux Linux61fc1a8e1e10cc784cab5829930838aaf1d37af5Vendor (CNA)
Linux Linux962ce9028ca6eb450d5c205238a3ee27de9d214dVendor (CNA)
Linux Linuxf32451ca4cb7dc53f2a0e2e66b84d34162747eb7Vendor (CNA)
Linux Linuxf4bd982563c2fd41ec9ca6c517c392d759db801cVendor (CNA)
Azure Linux 3.0 ARM6.6.92.2-1 · kernelMicrosoft (MSRC)
Azure Linux 3.0 x646.6.92.2-1 · kernelMicrosoft (MSRC)
debian:linux6.1.140-1 · 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. SSVC exploitation— → none
  2. Fix✗ → ✓

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

References

Show all references (6 more)

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

All records