Improper input validation in Linux kernel - CVE-2026-31615
Published: April 25, 2026
Vulnerability identifier: #VU127787
CSH Severity: Medium
CVSS v4.0: 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
CVE-ID: CVE-2026-31615
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
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.
How to mitigate CVE-2026-31615
Install security update from vendor's repository.