Linux Kernel up to 7.0-rc1 USB Endpoint denial of service

| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 4.6 | $0-$5k | 0.62 |
Summary
A vulnerability classified as critical was found in Linux Kernel up to 7.0-rc1. Impacted is an unknown function of the component USB Endpoint. The manipulation results in denial of service. This vulnerability is cataloged as CVE-2026-23365. There is no exploit available. Upgrading the affected component is advised.
Details
A vulnerability was found in Linux Kernel up to 7.0-rc1. It has been classified as critical. Affected is an unknown function of the component USB Endpoint. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. CVE summarizes:
In the Linux kernel, the following vulnerability has been resolved: net: usb: kalmia: validate USB endpoints The kalmia driver should validate that the device it is probing has the proper number and types of USB endpoints it is expecting before it binds to it. If a malicious device were to not have the same urbs the driver will crash later on when it blindly accesses these endpoints.
The advisory is available at git.kernel.org. This vulnerability is traded as CVE-2026-23365 since 01/13/2026. The exploitability is told to be difficult. The technical details are unknown and an exploit is not available.
Upgrading to version 6.1.167, 6.6.130, 6.12.77, 6.18.17, 6.19.7 or 7.0-rc2 eliminates this vulnerability. Applying the patch 28a380bfa5bc7f6a9380b85e8eab919ee6ac1701/12c0243de0aee0ab27cc00932fd5edae65c1e3a2/51c20ea5f1555a984c041b0dbf56f00d41b9e652/011684cd18349aa4c52167c8ac37a0524169f48c/7bfda1a0be4caec3263753d567678451cef73a85/c58b6c29a4c9b8125e8ad3bca0637e00b71e2693 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.
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Product
Type
Vendor
Name
Version
- 6.1.166
- 6.6.129
- 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
- 6.12.30
- 6.12.31
- 6.12.32
- 6.12.33
- 6.12.34
- 6.12.35
- 6.12.36
- 6.12.37
- 6.12.38
- 6.12.39
- 6.12.40
- 6.12.41
- 6.12.42
- 6.12.43
- 6.12.44
- 6.12.45
- 6.12.46
- 6.12.47
- 6.12.48
- 6.12.49
- 6.12.50
- 6.12.51
- 6.12.52
- 6.12.53
- 6.12.54
- 6.12.55
- 6.12.56
- 6.12.57
- 6.12.58
- 6.12.59
- 6.12.60
- 6.12.61
- 6.12.62
- 6.12.63
- 6.12.64
- 6.12.65
- 6.12.66
- 6.12.67
- 6.12.68
- 6.12.69
- 6.12.70
- 6.12.71
- 6.12.72
- 6.12.73
- 6.12.74
- 6.12.75
- 6.12.76
- 6.18.0
- 6.18.1
- 6.18.2
- 6.18.3
- 6.18.4
- 6.18.5
- 6.18.6
- 6.18.7
- 6.18.8
- 6.18.9
- 6.18.10
- 6.18.11
- 6.18.12
- 6.18.13
- 6.18.14
- 6.18.15
- 6.18.16
- 6.19.0
- 6.19.1
- 6.19.2
- 6.19.3
- 6.19.4
- 6.19.5
- 6.19.6
- 7.0-rc1
License
Website
- Vendor: https://www.kernel.org/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 4.8VulDB Meta Temp Score: 4.6
VulDB Base Score: 4.8
VulDB Temp Score: 4.6
VulDB Vector: 🔒
VulDB Reliability: 🔍
CVSSv2
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Denial of serviceCWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒
Physical: No
Local: No
Remote: Partially
Availability: 🔒
Status: Not defined
EPSS Score: 🔒
EPSS Percentile: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒
| 0-Day | Unlock | Unlock | Unlock | Unlock |
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| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔒
Upgrade: Kernel 6.1.167/6.6.130/6.12.77/6.18.17/6.19.7/7.0-rc2
Patch: 28a380bfa5bc7f6a9380b85e8eab919ee6ac1701/12c0243de0aee0ab27cc00932fd5edae65c1e3a2/51c20ea5f1555a984c041b0dbf56f00d41b9e652/011684cd18349aa4c52167c8ac37a0524169f48c/7bfda1a0be4caec3263753d567678451cef73a85/c58b6c29a4c9b8125e8ad3bca0637e00b71e2693
Timeline
01/13/2026 CVE reserved03/25/2026 Advisory disclosed
03/25/2026 VulDB entry created
03/30/2026 VulDB entry last update
Sources
Vendor: kernel.orgAdvisory: git.kernel.org
Status: Confirmed
CVE: CVE-2026-23365 (🔒)
GCVE (CVE): GCVE-0-2026-23365
GCVE (VulDB): GCVE-100-353094
Entry
Created: 03/25/2026 13:30Updated: 03/30/2026 11:43
Changes: 03/25/2026 13:30 (58), 03/30/2026 11:43 (1)
Complete: 🔍
Cache ID: 216:358:103
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