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NVD / CVE Program· CNA Linux

CVE-2025-37994: usb: typec: ucsi: displayport: Fix NULL pointer access

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: 0.22% (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 076ab0631ed4928905736f1701e25f1e722bc086, 14f298c52188c34acde9760bf5abc669c5c36fdb, 312d79669e71283d05c05cc49a1a31e59e3d9e0e; 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 076ab0631ed4928905736f1701e25f1e722bc086, 14f298c52188c34acde9760bf5abc669c5c36fdb, 312d79669e71283d05c05cc49a1a31e59e3d9e0e; 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 NULL pointer access This patch ensures that the UCSI driver waits for all pending tasks in the ucsi_displayport_work workqueue to finish executing before proceeding with the partner removal.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
May 29, 2025
Updated
Nov 5, 2026
EPSS
0.2% · 13th 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%

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-2025-37994

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 kernel5.5 and later · before 5.10.238
  • linux linux kernel5.11 and later · before 5.15.183
  • linux linux kernel5.16 and later · before 6.1.139
  • linux linux kernel5.2 and later · before 5.4.294
  • linux linux kernel6.7 and later · before 6.12.29
  • linux linux kernel6.13 and later · before 6.14.7
  • linux linux kernel6.2 and later · before 6.6.91
  • 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 9dda1e2a666a8a32ce0f153b5dee05c7351f1020affected · git
    • af8622f6a585d8d82b11cd7987e082861fd0edd3 and later · before a9931f1b52b2d0bf3952e003fd5901ea7eb851edaffected · git
    • af8622f6a585d8d82b11cd7987e082861fd0edd3 and later · before 7804c4d63edfdd5105926cc291e806e8f4ce01b5affected · git
    • af8622f6a585d8d82b11cd7987e082861fd0edd3 and later · before 076ab0631ed4928905736f1701e25f1e722bc086affected · git
    • af8622f6a585d8d82b11cd7987e082861fd0edd3 and later · before 14f298c52188c34acde9760bf5abc669c5c36fdbaffected · git
    • af8622f6a585d8d82b11cd7987e082861fd0edd3 and later · before 5ad298d6d4aebe1229adba6427e417e89a5208d8affected · git
    • af8622f6a585d8d82b11cd7987e082861fd0edd3 and later · before e9b63faf5c97deb43fc39a52edbc39d626cc14bfaffected · git
    • af8622f6a585d8d82b11cd7987e082861fd0edd3 and later · before 312d79669e71283d05c05cc49a1a31e59e3d9e0eaffected · git
    • before 5.2not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.139-16.1.139-1
Debian:13linuxbefore 6.12.29-16.12.29-1

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-2025-37996May 29, 2025 · KVM: arm64: Fix uninitialized memcache pointer in user_mem_abort()
    22Monitor
  • ← EarlierCVE-2025-37999May 29, 2025 · fs/erofs/fileio: call erofs_onlinefolio_split() after bio_add_folio()
    22Monitor
  • Later →CVE-2025-37995May 29, 2025 · module: ensure that kobject_put() is safe for module type kobjects
    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 Linux076ab0631ed4928905736f1701e25f1e722bc086Vendor (CNA)
Linux Linux14f298c52188c34acde9760bf5abc669c5c36fdbVendor (CNA)
Linux Linux312d79669e71283d05c05cc49a1a31e59e3d9e0eVendor (CNA)
Linux Linux5ad298d6d4aebe1229adba6427e417e89a5208d8Vendor (CNA)
Linux Linux7804c4d63edfdd5105926cc291e806e8f4ce01b5Vendor (CNA)
Linux Linux9dda1e2a666a8a32ce0f153b5dee05c7351f1020Vendor (CNA)
Linux Linuxa9931f1b52b2d0bf3952e003fd5901ea7eb851edVendor (CNA)
Linux Linuxe9b63faf5c97deb43fc39a52edbc39d626cc14bfVendor (CNA)
Azure Linux 3.0 ARM6.6.92.2-1 · kernelMicrosoft (MSRC)
Azure Linux 3.0 x646.6.92.2-1 · kernelMicrosoft (MSRC)
debian:linux6.1.139-1 · 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-476 · NULL Pointer Dereference

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.

Change log

  1. SSVC exploitation— → none
  2. 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