CVE-2026-43430
Race Condition in Linux Kernel USB Yurex Driver
Publication date: 2026-05-08
Last updated on: 2026-05-20
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 | 7.0 |
| linux | linux_kernel | From 6.2 (inc) to 6.6.130 (exc) |
| linux | linux_kernel | From 5.11 (inc) to 5.15.203 (exc) |
| linux | linux_kernel | From 5.16 (inc) to 6.1.167 (exc) |
| linux | linux_kernel | From 6.13 (inc) to 6.18.19 (exc) |
| linux | linux_kernel | From 6.7 (inc) to 6.12.78 (exc) |
| linux | linux_kernel | From 6.19 (inc) to 6.19.9 (exc) |
| linux | linux_kernel | From 2.6.37 (inc) to 5.10.253 (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: yurex driver. It involves a race condition during the probe process where the 'bbu' member of a descriptor is not properly initialized before submitting a USB Request Block (URB). Because 'bbu' is not set to an uninitialized value before the URB's completion handler sets it, there is a timing window where probing can overwrite data that has already been retrieved.
How can this vulnerability impact me? :
The vulnerability can lead to data corruption or inconsistent data being processed by the usb: yurex driver due to the race condition. This could potentially cause system instability or unexpected behavior when interacting with USB devices handled by this driver.