SB20260425105 - Improper input validation in Linux kernel gadget udc driver

Description

This security bulletin contains information about 1 vulnerability.

1) Improper input validation (CVE-ID: CVE-2026-31615)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper input validation in standard request handlers in the renesas_usb3 USB gadget driver when processing host-supplied standard USB requests. A remote attacker can send a specially crafted request with an invalid endpoint index to cause a denial of service.

Remediation

Install update from vendor's website.

References

• 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