Linux Kernel up to 6.14.6/6.15-rc5 UCSI Driver ucsi_con_mutex_lock deadlock

CVSS Meta Temp Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.14.6/6.15-rc5 and classified as critical. This affects the function ucsi_con_mutex_lock of the component UCSI Driver. The manipulation results in deadlock. This vulnerability was named CVE-2025-37967. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.14.6/6.15-rc5. It has been classified as critical. Affected is the function ucsi_con_mutex_lock of the component UCSI Driver. The manipulation with an unknown input leads to a deadlock vulnerability. CWE is classifying the issue as CWE-833. The product contains multiple threads or executable segments that are waiting for each other to release a necessary lock, resulting in deadlock. This is going to have an impact on availability. CVE summarizes:

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.

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2025-37967 since 04/16/2025. The exploitability is told to be difficult. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 237223 (Debian dsa-5925 : affs-modules-6.1.0-33-4kc-malta-di - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.14.7 or 6.15-rc6 eliminates this vulnerability. Applying the patch 61fc1a8e1e10cc784cab5829930838aaf1d37af5/364618c89d4c57c85e5fc51a2446cd939bf57802 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (237223) and CERT Bund (WID-SEC-2025-1114). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • Dell Avamar
  • Open Source Linux Kernel
  • Dell NetWorker
  • Dell Secure Connect Gateway

Productinfo

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Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.0

VulDB Base Score: 4.8
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Deadlock
CWE: CWE-833 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 237223
Nessus Name: Debian dsa-5925 : affs-modules-6.1.0-33-4kc-malta-di - security update

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 6.14.7/6.15-rc6
Patch: 61fc1a8e1e10cc784cab5829930838aaf1d37af5/364618c89d4c57c85e5fc51a2446cd939bf57802

Timelineinfo

04/16/2025 🔍
05/20/2025 +34 days 🔍
05/20/2025 +0 days 🔍
12/16/2025 +210 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-37967 (🔍)
GCVE (CVE): GCVE-0-2025-37967
GCVE (VulDB): GCVE-100-309768
CERT Bund: WID-SEC-2025-1114 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 05/20/2025 20:19
Updated: 12/16/2025 22:26
Changes: 05/20/2025 20:19 (59), 05/25/2025 03:55 (2), 08/10/2025 02:08 (7), 09/27/2025 16:29 (1), 12/14/2025 18:04 (1), 12/16/2025 22:26 (12)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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