CVE-2019-19447

kernel: mounting a crafted ext4 filesystem image, performing some operations, and unmounting can lead to a use-after-free in ext4_put_super in fs/ext4/super.c

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In the Linux kernel 5.0.21, mounting a crafted ext4 filesystem image, performing some operations, and unmounting can lead to a use-after-free in ext4_put_super in fs/ext4/super.c, related to dump_orphan_list in fs/ext4/super.c.

En el kernel de Linux versión 5.0.21, montando una imagen de sistema de archivos ext4 diseñada, al realizar algunas operaciones y desmontarla puede conllevar a un uso de la memoria previamente liberada en la función ext4_put_super en el archivo fs/ext4/super.c, relacionado con la función dump_orphan_list en el archivo fs/ext4/super.do.

A flaw was found in the Linux kernel's ext4_unlink function. An attacker could corrupt memory or escalate privileges when deleting a file from a recently unmounted specially crafted ext4 filesystem, including local, USB, and iSCSI.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-11-29 CVE Reserved
2019-12-08 CVE Published
2023-11-13 EPSS Updated
2024-08-05 CVE Updated
2024-08-05 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-416: Use After Free

CAPEC

References (8)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html	Mailing List
https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html	Mailing List
https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html	Mailing List
https://security.netapp.com/advisory/ntap-20200103-0001	Third Party Advisory

URL	Date	SRC
https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19447	2024-08-05

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html	2023-10-03
https://access.redhat.com/security/cve/CVE-2019-19447	2020-12-22
https://bugzilla.redhat.com/show_bug.cgi?id=1781679	2020-12-22

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"				>= 2.6.12 < 3.16.82 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.12 < 3.16.82"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 3.17 < 4.4.208 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.17 < 4.4.208"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.5.0 < 4.9.208 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.5.0 < 4.9.208"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.10 < 4.14.159 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.10 < 4.14.159"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.15 < 4.19.90 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.15 < 4.19.90"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.20 < 5.3.17 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.20 < 5.3.17"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.4 < 5.4.4 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.4 < 5.4.4"		-		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"		Data Availability Services Search vendor "Netapp" for product "Data Availability Services"				-		-		Affected
Netapp Search vendor "Netapp"		Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller"				h610s Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h610s"		-		Affected
Netapp Search vendor "Netapp"		Steelstore Cloud Integrated Storage Search vendor "Netapp" for product "Steelstore Cloud Integrated Storage"				-		-		Affected
Netapp Search vendor "Netapp"		Solidfire Baseboard Management Controller Search vendor "Netapp" for product "Solidfire Baseboard Management Controller"				-		-		Affected