CVE-2016-5412

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

Severity Score

6.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

arch/powerpc/kvm/book3s_hv_rmhandlers.S en el kernel de Linux hasta la versión 4.7 en plataformas PowerPC, cuando se encuentra habilitada CONFIG_KVM_BOOK3S_64_HV, permite a usuarios invitados del SO provocar una denegación de servicio (bucle infinito del SO anfitrión) haciendo una hiperllamada H_CEDE durante la existencia de una transacción suspendida.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Adjacent

Attack Complexity

High

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Complete

Attack Vector

Adjacent

Attack Complexity

High

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-06-10 CVE Reserved
2016-08-06 CVE Published
2023-03-08 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-399: Resource Management Errors
CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')

CAPEC

References (8)

URL	Tag	Source
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=93d17397e4e2182fdaad503e2f9da46202c0f1c3	X_refsource_confirm
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f024ee098476a3e620232e4a78cfac505f121245	X_refsource_confirm
http://www.openwall.com/lists/oss-security/2016/07/28/2	Mailing List
https://github.com/torvalds/linux/commit/93d17397e4e2182fdaad503e2f9da46202c0f1c3	X_refsource_confirm
https://github.com/torvalds/linux/commit/f024ee098476a3e620232e4a78cfac505f121245	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=1349916	2016-11-03

URL	Date	SRC
http://rhn.redhat.com/errata/RHSA-2016-2574.html	2023-02-12
https://access.redhat.com/security/cve/CVE-2016-5412	2016-11-03

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				<= 4.7 Search vendor "Linux" for product "Linux Kernel" and version " <= 4.7"		-		Affected