CVE-2021-28038

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An issue was discovered in the Linux kernel through 5.11.3, as used with Xen PV. A certain part of the netback driver lacks necessary treatment of errors such as failed memory allocations (as a result of changes to the handling of grant mapping errors). A host OS denial of service may occur during misbehavior of a networking frontend driver. NOTE: this issue exists because of an incomplete fix for CVE-2021-26931.

Se detectó un problema en el kernel de Linux versiones hasta 5.11.3, como es usada con Xen PV. Una cierta parte del controlador netback carece del tratamiento necesario de errores como asignaciones de memoria fallidas (como resultado de cambios en el manejo de errores de asignación de permisos). Puede producirse una denegación de servicio del Sistema Operativo host durante el comportamiento inapropiado de un controlador de interfaz de red. NOTA: este problema se presenta debido a una corrección incompleta para el CVE-2021-26931

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-03-05 CVE Reserved
2021-03-05 CVE Published
2023-03-08 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-770: Allocation of Resources Without Limits or Throttling

CAPEC

References (6)

URL	Tag	Source
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2991397d23ec597405b116d96de3813420bdcbc3
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html	Mailing List
https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html	Mailing List
https://security.netapp.com/advisory/ntap-20210409-0001	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
http://www.openwall.com/lists/oss-security/2021/03/05/1	2024-03-25
http://xenbits.xen.org/xsa/advisory-367.html	2024-03-25

URL	Date	SRC

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"				>= 2.6.39 < 4.4.260 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.39 < 4.4.260"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.5.0 < 4.9.260 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.5.0 < 4.9.260"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.10.0 < 4.14.224 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.10.0 < 4.14.224"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.15.0 < 4.19.179 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.15.0 < 4.19.179"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.20.0 < 5.4.103 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.20.0 < 5.4.103"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.10.0 < 5.10.21 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.10.0 < 5.10.21"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.11.0 < 5.11.4 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.11.0 < 5.11.4"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				5.12 Search vendor "Linux" for product "Linux Kernel" and version "5.12"		rc1		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				5.12 Search vendor "Linux" for product "Linux Kernel" and version "5.12"		rc2		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected
Netapp Search vendor "Netapp"		Cloud Backup Search vendor "Netapp" for product "Cloud Backup"				-		-		Affected
Netapp Search vendor "Netapp"		Solidfire Baseboard Management Controller Firmware Search vendor "Netapp" for product "Solidfire Baseboard Management Controller Firmware"				-		-		Affected