CVE-2025-38497: usb: gadget: configfs: Fix OOB read on empty string write
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 'qwsign' 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 osdescqwsignstore() and webusblandingPagestore() to handle the zero-length input case gracefully by returning immediately.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.113-1Fixed in 7.2.12-1Fixed in 7.2.13-1
Event History
Frequently Asked Questions
What is the severity of CVE-2025-38497?
CVE-2025-38497 has a medium severity rating due to the potential for an out-of-bounds read on the Linux kernel.
How do I fix CVE-2025-38497?
To fix CVE-2025-38497, update your Linux kernel to the latest version that addresses this vulnerability.
What versions of Linux kernel are affected by CVE-2025-38497?
CVE-2025-38497 affects specific versions of the Linux kernel prior to the patch released for this issue.
What are the potential impacts of CVE-2025-38497?
The potential impacts of CVE-2025-38497 include data leakage and application crashes due to out-of-bounds memory access.
Is CVE-2025-38497 related to USB functionality in the Linux kernel?
Yes, CVE-2025-38497 is specifically related to the USB gadget subsystem within the Linux kernel.