CVE-2026-90097
kernel: Drivers: hv: vmbus: Skip VMBus module cleanup for non-nested root partition
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 17, 2026
Updated · October 13, 2026
Description
A flaw was found in the Linux kernel's VMBus module. When the VMBus module is loaded in a non-nested root partition without full initialization, attempting to unload it can trigger a memory fault. This improper cleanup of uninitialized resources results in a kernel panic, leading to a Denial of Service (DoS) for 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-824 · Access of Uninitialized Pointer