CVE-2025-38497
Published: July 29, 2025Last modified: July 29, 2025
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 score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.1 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.147-r0) |
| 25 LTS | linux-lts | Fixed (6.12.41-r0) | |
| Stream | linux-lts | Fixed (6.12.41-r0) |
References
- https://git.kernel.org/stable/c/15a87206879951712915c03c8952a73d6a74721e
- https://git.kernel.org/stable/c/22b7897c289cc25d99c603f5144096142a30d897
- https://git.kernel.org/stable/c/2798111f8e504ac747cce911226135d50b8de468
- https://git.kernel.org/stable/c/3014168731b7930300aab656085af784edc861f6
- https://git.kernel.org/stable/c/58bdd5160184645771553ea732da5c2887fc9bd1
- https://git.kernel.org/stable/c/783ea37b237a9b524f1e5ca018ea17d772ee0ea0
- https://git.kernel.org/stable/c/78b41148cfea2a3f04d87adf3a71b21735820a37
- https://git.kernel.org/stable/c/d68b7c8fefbaeae8f065b84e40cf64baf4cc0c76
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html