CVE-2021-30178

kernel: NULL pointer dereference in synic_get function in arch/x86/kvm/hyperv.c for certain accesses to the SynIC Hyper-V context

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · February 26, 2021

Updated · June 28, 2026

Description

A flaw was found in the Linux kernel. A NULL pointer dereference occurs for certain accesses to the SynIC Hyper-V context. The highest threat from this vulnerability is to system availability.

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 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-476 · NULL Pointer Dereference