CVE-2026-31615
Published: May 3, 2026Last modified: May 3, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: renesas_usb3: validate endpoint index in standard request handlers The GET_STATUS and SET/CLEAR_FEATURE handlers extract the endpoint number from the host-supplied wIndex without any sort of validation. Fix this up by validating the number of endpoints actually match up with the number the device has before attempting to dereference a pointer based on this math. This is just like what was done in commit ee0d382feb44 ("usb: gadget: aspeed_udc: validate endpoint index for ast udc") for the aspeed driver.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Vulnerable (6.1.170-r0) |
| 25 LTS | linux-lts | Fixed (6.12.85-r0) | |
| Stream | linux-lts | Fixed (6.12.85-r0) |
References
- https://git.kernel.org/stable/c/1b2bfedccc4fb8c9572e1ea464f905424c91de2a
- https://git.kernel.org/stable/c/37f430b2240655e6b0199a92aa1057e4d621be51
- https://git.kernel.org/stable/c/44216e3dd4455b798899b50eedb0ec3831dff8e0
- https://git.kernel.org/stable/c/adb8014599fdf0818d3d93f1f74e06cd0bdec08d
- https://git.kernel.org/stable/c/e3d42598f2995cdc07b7779874e7c5f8a1b773db
- https://git.kernel.org/stable/c/f880aac8a57ebd92abfa685d45424b2998ac1059