CVE-2026-98812
kernel: net/mctp: publish the mctp_dev only after it is initialised
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 18, 2026
Updated · October 24, 2026
Description
A flaw was found in the Linux kernel's Management Component Transport Protocol (MCTP) subsystem. This vulnerability allows a local user to cause a Denial of Service (DoS) by triggering a kernel crash. During device setup, the kernel exposes the network device object before its internal pointers are fully initialized. A concurrent operation accessing the uninitialized device dereferences a null pointer, crashing the 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