CVE-2026-43430
Analyzed Analyzed - Analysis Complete
Race Condition in Linux Kernel USB Yurex Driver

Publication date: 2026-05-08

Last updated on: 2026-05-20

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: usb: yurex: fix race in probe The bbu member of the descriptor must be set to the value standing for uninitialized values before the URB whose completion handler sets bbu is submitted. Otherwise there is a window during which probing can overwrite already retrieved data.
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Meta Information
Published
2026-05-08
Last Modified
2026-05-20
Generated
2026-06-19
AI Q&A
2026-05-08
EPSS Evaluated
2026-06-18
NVD
CVE-2026-43430
EUVD
EUVD-2026-28736
Affected Vendors & Products
Showing 14 associated CPEs
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)
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Exploitability
CWE
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KEV
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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.
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Executive Summary

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.

Impact Analysis

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.

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