Linux Kernel up to 6.14.7 macb_halt_tx deadlock

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5.0	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.14.7 and classified as critical. Impacted is the function macb_halt_tx. The manipulation results in deadlock. This vulnerability is reported as CVE-2025-38094. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.14.7. It has been classified as critical. Affected is the function macb_halt_tx. 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: net: cadence: macb: Fix a possible deadlock in macb_halt_tx. There is a situation where after THALT is set high, TGO stays high as well. Because jiffies are never updated, as we are in a context with interrupts disabled, we never exit that loop and have a deadlock. That deadlock was noticed on a sama5d4 device that stayed locked for days. Use retries instead of jiffies so that the timeout really works and we do not have a deadlock anymore.

The advisory is available at git.kernel.org. This vulnerability is traded as CVE-2025-38094 since 04/16/2025. The exploitability is told to be difficult. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 242345 (Ubuntu 20.04 LTS : Linux kernel (Intel IoTG) vulnerabilities (USN-7655-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.238, 5.15.184, 6.1.140, 6.6.92, 6.12.30 or 6.14.8 eliminates this vulnerability. Applying the patch 0772a608d799ac0d127c0a36047a2725777aba9d/64675a9c00443b2e8af42af08c38fc1b78b68ba2/aace6b63892ce8307e502a60fe2f5a4bc6e1cfe7/1d60c0781c1bbeaa1196b0d8aad5c435f06cb7c4/3e64d35475aa21d13dab71da51de51923c1a3a48/84f98955a9de0e0f591df85aa1a44f3ebcf1cb37/c92d6089d8ad7d4d815ebcedee3f3907b539ff1f 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 (242345), EUVD (EUVD-2025-19769) and CERT Bund (WID-SEC-2025-1452). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

• Google Container-Optimized OS
• 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

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 5.10.237
• 5.15.183
• 6.1.139
• 6.6.0
• 6.6.1
• 6.6.2
• 6.6.3
• 6.6.4
• 6.6.5
• 6.6.6
• 6.6.7
• 6.6.8
• 6.6.9
• 6.6.10
• 6.6.11
• 6.6.12
• 6.6.13
• 6.6.14
• 6.6.15
• 6.6.16
• 6.6.17
• 6.6.18
• 6.6.19
• 6.6.20
• 6.6.21
• 6.6.22
• 6.6.23
• 6.6.24
• 6.6.25
• 6.6.26
• 6.6.27
• 6.6.28
• 6.6.29
• 6.6.30
• 6.6.31
• 6.6.32
• 6.6.33
• 6.6.34
• 6.6.35
• 6.6.36
• 6.6.37
• 6.6.38
• 6.6.39
• 6.6.40
• 6.6.41
• 6.6.42
• 6.6.43
• 6.6.44
• 6.6.45
• 6.6.46
• 6.6.47
• 6.6.48
• 6.6.49
• 6.6.50
• 6.6.51
• 6.6.52
• 6.6.53
• 6.6.54
• 6.6.55
• 6.6.56
• 6.6.57
• 6.6.58
• 6.6.59
• 6.6.60
• 6.6.61
• 6.6.62
• 6.6.63
• 6.6.64
• 6.6.65
• 6.6.66
• 6.6.67
• 6.6.68
• 6.6.69
• 6.6.70
• 6.6.71
• 6.6.72
• 6.6.73
• 6.6.74
• 6.6.75
• 6.6.76
• 6.6.77
• 6.6.78
• 6.6.79
• 6.6.80
• 6.6.81
• 6.6.82
• 6.6.83
• 6.6.84
• 6.6.85
• 6.6.86
• 6.6.87
• 6.6.88
• 6.6.89
• 6.6.90
• 6.6.91
• 6.12.0
• 6.12.1
• 6.12.2
• 6.12.3
• 6.12.4
• 6.12.5
• 6.12.6
• 6.12.7
• 6.12.8
• 6.12.9
• 6.12.10
• 6.12.11
• 6.12.12
• 6.12.13
• 6.12.14
• 6.12.15
• 6.12.16
• 6.12.17
• 6.12.18
• 6.12.19
• 6.12.20
• 6.12.21
• 6.12.22
• 6.12.23
• 6.12.24
• 6.12.25
• 6.12.26
• 6.12.27
• 6.12.28
• 6.12.29
• 6.14.0
• 6.14.1
• 6.14.2
• 6.14.3
• 6.14.4
• 6.14.5
• 6.14.6
• 6.14.7

License

• open-source

Website

• Vendor: https://www.kernel.org/

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

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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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: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 242345
Nessus Name: Ubuntu 20.04 LTS : Linux kernel (Intel IoTG) vulnerabilities (USN-7655-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.10.238/5.15.184/6.1.140/6.6.92/6.12.30/6.14.8
Patch: 0772a608d799ac0d127c0a36047a2725777aba9d/64675a9c00443b2e8af42af08c38fc1b78b68ba2/aace6b63892ce8307e502a60fe2f5a4bc6e1cfe7/1d60c0781c1bbeaa1196b0d8aad5c435f06cb7c4/3e64d35475aa21d13dab71da51de51923c1a3a48/84f98955a9de0e0f591df85aa1a44f3ebcf1cb37/c92d6089d8ad7d4d815ebcedee3f3907b539ff1f

Timelineinfo

04/16/2025 🔍
07/03/2025 +78 days 🔍
07/03/2025 +0 days 🔍
04/17/2026 +288 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-38094 (🔍)
GCVE (CVE): GCVE-0-2025-38094
GCVE (VulDB): GCVE-100-314682
EUVD: 🔍
CERT Bund: WID-SEC-2025-1452 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 07/03/2025 11:39
Updated: 04/17/2026 13:33
Changes: 07/03/2025 11:39 (58), 07/03/2025 11:53 (1), 07/19/2025 15:26 (2), 07/31/2025 09:52 (7), 08/23/2025 13:24 (1), 09/21/2025 13:28 (1), 11/09/2025 10:21 (1), 12/06/2025 01:18 (1), 12/16/2025 18:34 (12), 04/17/2026 13:33 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion

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