CVE-2022-33747

Severity CVSS v4.0:

Pending analysis

Type:

CWE-404 Improper Resource Shutdown or Release

Publication date:

11/10/2022

Last modified:

04/02/2024

Description

Arm: unbounded memory consumption for 2nd-level page tables Certain actions require e.g. removing pages from a guest&#39;s P2M (Physical-to-Machine) mapping. When large pages are in use to map guest pages in the 2nd-stage page tables, such a removal operation may incur a memory allocation (to replace a large mapping with individual smaller ones). These memory allocations are taken from the global memory pool. A malicious guest might be able to cause the global memory pool to be exhausted by manipulating its own P2M mappings.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L CVSS v3.1 Severity and Metrics:

Base Score: 3.80 LOW
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): None
Integrity (I): None
Availability (A): Low

Base Score 3.x

3.80

Severity 3.x

LOW

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:xen:xen:::::::arm:*
cpe:2.3:o:fedoraproject:fedora:35:::::::*
cpe:2.3:o:fedoraproject:fedora:36:::::::*
cpe:2.3:o:fedoraproject:fedora:37:::::::*
cpe:2.3:o:debian:debian_linux:11.0:::::::*

To consult the complete list of CPE names with products and versions, see this page

CPE	From	Up to
cpe:2.3:o:xen:xen:::::::arm:*
cpe:2.3:o:fedoraproject:fedora:35:::::::*
cpe:2.3:o:fedoraproject:fedora:36:::::::*
cpe:2.3:o:fedoraproject:fedora:37:::::::*
cpe:2.3:o:debian:debian_linux:11.0:::::::*

CVE-2022-33747

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools