#VU124539 Uncontrolled Recursion in Linux kernel - CVE-2026-23312
Published: March 25, 2026
Vulnerability identifier: #VU124539
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/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-2026-23312
CWE-ID: CWE-674
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper input validation in the kaweth USB driver when handling USB endpoints during device probing. A remote attacker can connect a malicious USB device with invalid or unexpected endpoint configurations to cause a denial of service.
Exploitation does not require authentication or user interaction beyond physically connecting the device; however, the attack vector is considered remote as it targets kernel-level USB subsystem handling.
Remediation
Install security update from vendor's repository.
External links
- https://git.kernel.org/stable/c/0aae18e4638a7c1c579df92bc6edc36cedfaaa8c
- https://git.kernel.org/stable/c/2795fc06e7652c0ba299d936c584d5e08b6b57a1
- https://git.kernel.org/stable/c/4b063c002ca759d1b299988ee23f564c9609c875
- https://git.kernel.org/stable/c/72f90f481c6a059680b9b976695d4cfb04fba1f3
- https://git.kernel.org/stable/c/7c7ebf5e45d2504d92ea294ac3828d58586491df
- https://git.kernel.org/stable/c/f33e80d195a003b384620ee240f69092b519146b