CVE-2020-10757

kernel: kernel: DAX hugepages not considered during mremap

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A flaw was found in the Linux Kernel in versions after 4.5-rc1 in the way mremap handled DAX Huge Pages. This flaw allows a local attacker with access to a DAX enabled storage to escalate their privileges on the system.

Se encontró un fallo en el kernel de Linux en las versiones posteriores a 4.5-rc1, en la manera en que mremap manejó DAX Huge Pages. Este fallo permite a un atacante local con acceso a un almacenamiento habilitado para DAX escalar sus privilegios en el sistema

A flaw was found in the way mremap handled DAX Huge Pages. This flaw allows a local attacker with access to a DAX enabled storage to escalate their privileges on the system.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Medium

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-03-20 CVE Reserved
2020-06-09 CVE Published
2024-01-20 EPSS Updated
2024-08-04 CVE Updated
2024-08-04 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')

CAPEC

References (14)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html	Mailing List
https://security.netapp.com/advisory/ntap-20200702-0004	Third Party Advisory

URL	Date	SRC
https://www.openwall.com/lists/oss-security/2020/06/04/4	2024-08-04

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html	2024-01-19
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5bfea2d9b17f1034a68147a8b03b9789af5700f9	2024-01-19

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=1842525	2020-09-01
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IEM47BXZJLODRH5YNNZSAQ2NVM63MYMC	2024-01-19
https://usn.ubuntu.com/4426-1	2024-01-19
https://usn.ubuntu.com/4439-1	2024-01-19
https://usn.ubuntu.com/4440-1	2024-01-19
https://usn.ubuntu.com/4483-1	2024-01-19
https://www.debian.org/security/2020/dsa-4698	2024-01-19
https://www.debian.org/security/2020/dsa-4699	2024-01-19
https://access.redhat.com/security/cve/CVE-2020-10757	2020-09-01

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"				>= 4.5 < 4.9.227 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.5 < 4.9.227"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.10 < 4.14.184 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.10 < 4.14.184"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.15 < 4.19.127 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.15 < 4.19.127"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.20 < 5.4.45 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.20 < 5.4.45"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.5 < 5.6.17 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 5.6.17"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.7 < 5.7.1 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.7 < 5.7.1"		-		Affected
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				15.1 Search vendor "Opensuse" for product "Leap" and version "15.1"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"				7.0 Search vendor "Redhat" for product "Enterprise Linux" and version "7.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"				8.0 Search vendor "Redhat" for product "Enterprise Linux" and version "8.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Mrg Search vendor "Redhat" for product "Enterprise Mrg"				2.0 Search vendor "Redhat" for product "Enterprise Mrg" and version "2.0"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				31 Search vendor "Fedoraproject" for product "Fedora" and version "31"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04"		esm		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				20.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "20.04"		lts		Affected
Netapp Search vendor "Netapp"		Active Iq Unified Manager Search vendor "Netapp" for product "Active Iq Unified Manager"				-		vmware_vsphere		Affected
Netapp Search vendor "Netapp"		Cloud Backup Search vendor "Netapp" for product "Cloud Backup"				-		-		Affected
Netapp Search vendor "Netapp"		Steelstore Cloud Integrated Storage Search vendor "Netapp" for product "Steelstore Cloud Integrated Storage"				-		-		Affected