#VU124560 Loop with Unreachable Exit Condition ('Infinite Loop') in Linux kernel - CVE-2026-23298

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Main Vulnerability Database Vulnerabilities #VU124560

#VU124560 Loop with Unreachable Exit Condition ('Infinite Loop') in Linux kernel - CVE-2026-23298

Published: March 25, 2026


Vulnerability identifier: #VU124560
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-23298
CWE-ID: CWE-835
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
Linux kernel
Software vendor:
Linux Foundation

Description

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to an infinite loop in the ucan driver when processing zero-length messages from a ucan device. A local user can connect a specially crafted ucan device to trigger an infinite loop in ucan_read_bulk_callback(), causing the system to hang.


Remediation

Install security update from vendor's repository.

External links