SB20260812149 - Race condition in Linux kernel usb core driver

Description

This security bulletin contains information about 1 vulnerability.

1) Race condition (CVE-ID: CVE-2026-68374)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a race condition in bos_descriptors_read() in the USB core sysfs interface when reading BOS descriptors while the associated usb_device BOS data is being reset and freed concurrently. A local user can trigger concurrent device reset activity during sysfs access to cause a denial of service.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/217774e143d7b5a88739193284b6421be3978601
• https://git.kernel.org/stable/c/4e0197fbb0eec588795d5431716a244d9ac8fa93
• https://git.kernel.org/stable/c/ab82adf5e63b2d89ead7933ab753b9cedbe028e9
• https://git.kernel.org/stable/c/c07caee449c968842a350bfefa049889923b8240