CVE-2025-38497 – Linux Kernel USB Gadget configfs Out-of-Bounds Read

CVE ID : CVE-2025-38497

Published : July 28, 2025, 12:15 p.m. | 1 hour, 5 minutes ago

Description : In the Linux kernel, the following vulnerability has been resolved:

usb: gadget: configfs: Fix OOB read on empty string write

When writing an empty string to either ‘qw_sign’ or ‘landingPage’
sysfs attributes, the store functions attempt to access page[l – 1] before validating that the length ‘l’ is greater than zero.

This patch fixes the vulnerability by adding a check at the beginning
of os_desc_qw_sign_store() and webusb_landingPage_store() to handle
the zero-length input case gracefully by returning immediately.

Severity: 0.0 | NA

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