CVE-2026-63876
kernel: serial: zs: Convert to use a platform device
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · July 19, 2026
Updated · October 31, 2026
Description
A flaw was found in the Linux kernel's zs serial driver. During the initialization of the first serial port, a null pointer dereference occurs when a pointer derived from a null parent device pointer is accessed. This vulnerability can lead to a system crash, resulting in a Denial of Service (DoS) for the affected system.
CVSS score applicability
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.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 · NULL Pointer Dereference