CVE-2016-5412

Kernel: powerpc: kvm: Infinite loop via H_CEDE hypercall when running under hypervisor-mode

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Severity

Moderate

Red Hat Product Security

5.4

CVSS 3.0

Review impact separately from score.

Published · July 28, 2016

Updated · November 21, 2025

Description

arch/powerpc/kvm/book3s_hv_rmhandlers.S in the Linux kernel through 4.7 on PowerPC platforms, when CONFIG_KVM_BOOK3S_64_HV is enabled, allows guest OS users to cause a denial of service (host OS infinite loop) by making a H_CEDE hypercall during the existence of a suspended transaction.

Statement

This issue does not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG 2.

This issue affects the version of the kernel packages as shipped with Red Hat Enterprise Linux 7. Future kernel updates for Red Hat Enterprise Linux 7 may address this issue.

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 3.0 · 5.4
CVSS:3.0/AV:A/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H

CVSS 2.0 · 4.3
AV:A/AC:H/Au:S/C:N/I:N/A:C

CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')