CVE-2026-98747

A flaw was found in the Linux kernel's serial core subsystem. This flaw allows a local user with administrative access to cause a Denial of Service (DoS) by crashing the system. The issue occurs during the unregistration of a serial port that failed during initial setup or was previously torn down, causing the kernel to improperly access an empty memory address (NULL pointer dereference). This invalid access triggers a kernel crash, disrupting system availability.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.