Linux Kernel up to 6.16-rc4 usb cros_typec_altmode_work deadlock

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

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel up to 6.16-rc4. This issue affects the function cros_typec_altmode_work of the component usb. The manipulation results in deadlock. This vulnerability is known as CVE-2025-38404. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.16-rc4. Affected is the function cros_typec_altmode_work of the component usb. 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: 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.

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2025-38404 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 270134 (Debian dla-4328 : linux-config-6.1 - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.1.144, 6.6.97, 6.12.37, 6.15.6, 6.16-rc1 or 6.16-rc5 eliminates this vulnerability. Applying the patch 749d9076735fb497aae60fbea9fff563f9ea3254/eb08fca56f1f39e4038cb9bac9864464b13b00aa/7be0d1ea71f52595499da39cea484a895e8ed042/76cf1f33e7319fe74c94ac92f9814094ee8cc84b/63cff9f57e86b2dc25d7487ca0118df89a665296/c782f98eef14197affa8a7b91e6981420f109ea9/80c25d7916a44715338d4f8924c8e52af50d0b9f/099cf1fbb8afc3771f408109f62bdec66f85160e 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 (270134) and CERT Bund (WID-SEC-2025-1653). 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
  • IBM QRadar SIEM
  • SUSE openSUSE
  • RESF Rocky Linux
  • Dell Avamar
  • Open Source Linux Kernel
  • Dell NetWorker
  • Dell Secure Connect Gateway

Productinfo

Type

Vendor

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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 270134
Nessus Name: Debian dla-4328 : linux-config-6.1 - security update

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.1.144/6.6.97/6.12.37/6.15.6/6.16-rc1/6.16-rc5
Patch: 749d9076735fb497aae60fbea9fff563f9ea3254/eb08fca56f1f39e4038cb9bac9864464b13b00aa/7be0d1ea71f52595499da39cea484a895e8ed042/76cf1f33e7319fe74c94ac92f9814094ee8cc84b/63cff9f57e86b2dc25d7487ca0118df89a665296/c782f98eef14197affa8a7b91e6981420f109ea9/80c25d7916a44715338d4f8924c8e52af50d0b9f/099cf1fbb8afc3771f408109f62bdec66f85160e

Timelineinfo

04/16/2025 CVE reserved
07/25/2025 +100 days Advisory disclosed
07/25/2025 +0 days VulDB entry created
01/03/2026 +162 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-38404 (🔒)
GCVE (CVE): GCVE-0-2025-38404
GCVE (VulDB): GCVE-100-317640
CERT Bund: WID-SEC-2025-1653 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 07/25/2025 15:37
Updated: 01/03/2026 19:53
Changes: 07/25/2025 15:37 (59), 08/20/2025 18:10 (7), 09/14/2025 18:38 (1), 09/16/2025 00:13 (1), 09/28/2025 22:02 (1), 10/14/2025 03:54 (2), 11/02/2025 10:14 (1), 11/17/2025 01:47 (1), 12/24/2025 06:17 (12), 01/03/2026 19:53 (1)
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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