CVE-2026-43342
USB Gadget RNDIS Race Condition Fixed
Publication date: 2026-05-08
Last updated on: 2026-05-18
Assigner: kernel.org
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | From 5.11 (inc) to 5.15.203 (exc) |
| linux | linux_kernel | From 6.13 (inc) to 6.18.22 (exc) |
| linux | linux_kernel | From 5.16 (inc) to 6.1.168 (exc) |
| linux | linux_kernel | From 4.14 (inc) to 5.10.253 (exc) |
| linux | linux_kernel | From 6.19 (inc) to 6.19.12 (exc) |
| linux | linux_kernel | From 6.7 (inc) to 6.12.81 (exc) |
| linux | linux_kernel | From 6.2 (inc) to 6.6.134 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-362 | The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in the Linux kernel's USB gadget function, specifically in the f_rndis module. The issue involves race conditions affecting the class, subclass, and protocol options, which can be accessed concurrently through configfs. Because these options were not properly protected, concurrent access could lead to unexpected behavior. The vulnerability was fixed by using an existing mutex to protect these options, preventing simultaneous access and eliminating the race condition.
How can this vulnerability impact me? :
The vulnerability could lead to race conditions when accessing certain USB gadget configuration options concurrently. This might cause instability or unpredictable behavior in the affected system's USB functionality. However, the exact impact depends on how the system uses the f_rndis module and whether concurrent access to these options occurs in practice.