CVE-2019-11833

kernel: fs/ext4/extents.c leads to information disclosure

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

fs/ext4/extents.c in the Linux kernel through 5.1.2 does not zero out the unused memory region in the extent tree block, which might allow local users to obtain sensitive information by reading uninitialized data in the filesystem.

fs / ext4 / extents.c en el kernel de Linux hasta 5.1.2 no pone a cero la región de memoria no utilizada en el bloque del árbol de extensión, lo que podría permitir a los usuarios locales obtener información confidencial al leer datos no inicializados en el sistema de archivos.

A flaw was found in the Linux kernel's implementation of ext4 extent management. The kernel doesn't correctly initialize memory regions in the extent tree block which may be exported to a local user to obtain sensitive information by reading empty/uninitialized data from the filesystem.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-05-09 CVE Reserved
2019-05-15 CVE Published
2023-03-08 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
CWE-908: Use of Uninitialized Resource

CAPEC

References (24)

URL	Tag	Source
http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html	Third Party Advisory
http://www.securityfocus.com/bid/108372	Broken Link
https://lists.debian.org/debian-lts-announce/2019/06/msg00010.html	Mailing List
https://lists.debian.org/debian-lts-announce/2019/06/msg00011.html	Mailing List
https://seclists.org/bugtraq/2019/Jun/26	Mailing List

URL	Date	SRC

URL	Date	SRC
https://github.com/torvalds/linux/commit/592acbf16821288ecdc4192c47e3774a4c48bb64	2023-11-07

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00071.html	2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html	2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.html	2023-11-07
https://access.redhat.com/errata/RHSA-2019:2029	2023-11-07
https://access.redhat.com/errata/RHSA-2019:2043	2023-11-07
https://access.redhat.com/errata/RHSA-2019:3309	2023-11-07
https://access.redhat.com/errata/RHSA-2019:3517	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GJGZIMGB72TL7OGWRMHIL43WHXFQWU4X	2023-11-07
https://usn.ubuntu.com/4068-1	2023-11-07
https://usn.ubuntu.com/4068-2	2023-11-07
https://usn.ubuntu.com/4069-1	2023-11-07
https://usn.ubuntu.com/4069-2	2023-11-07
https://usn.ubuntu.com/4076-1	2023-11-07
https://usn.ubuntu.com/4095-2	2023-11-07
https://usn.ubuntu.com/4118-1	2023-11-07
https://www.debian.org/security/2019/dsa-4465	2023-11-07
https://access.redhat.com/security/cve/CVE-2019-11833	2019-11-05
https://bugzilla.redhat.com/show_bug.cgi?id=1712072	2019-11-05

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"				<= 5.1.2 Search vendor "Linux" for product "Linux Kernel" and version " <= 5.1.2"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				29 Search vendor "Fedoraproject" for product "Fedora" and version "29"		-		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
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
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04"		esm		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"				19.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "19.04"		-		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 Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop"				7.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "7.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Eus Search vendor "Redhat" for product "Enterprise Linux Eus"				8.1 Search vendor "Redhat" for product "Enterprise Linux Eus" and version "8.1"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Eus Search vendor "Redhat" for product "Enterprise Linux Eus"				8.2 Search vendor "Redhat" for product "Enterprise Linux Eus" and version "8.2"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Eus Search vendor "Redhat" for product "Enterprise Linux Eus"				8.4 Search vendor "Redhat" for product "Enterprise Linux Eus" and version "8.4"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Eus Search vendor "Redhat" for product "Enterprise Linux Eus"				8.6 Search vendor "Redhat" for product "Enterprise Linux Eus" and version "8.6"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux For Real Time Search vendor "Redhat" for product "Enterprise Linux For Real Time"				7 Search vendor "Redhat" for product "Enterprise Linux For Real Time" and version "7"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux For Real Time Search vendor "Redhat" for product "Enterprise Linux For Real Time"				8.0 Search vendor "Redhat" for product "Enterprise Linux For Real Time" and version "8.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux For Real Time For Nfv Search vendor "Redhat" for product "Enterprise Linux For Real Time For Nfv"				7 Search vendor "Redhat" for product "Enterprise Linux For Real Time For Nfv" and version "7"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux For Real Time For Nfv Search vendor "Redhat" for product "Enterprise Linux For Real Time For Nfv"				8.0 Search vendor "Redhat" for product "Enterprise Linux For Real Time For Nfv" and version "8.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux For Real Time For Nfv Tus Search vendor "Redhat" for product "Enterprise Linux For Real Time For Nfv Tus"				8.2 Search vendor "Redhat" for product "Enterprise Linux For Real Time For Nfv Tus" and version "8.2"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux For Real Time For Nfv Tus Search vendor "Redhat" for product "Enterprise Linux For Real Time For Nfv Tus"				8.4 Search vendor "Redhat" for product "Enterprise Linux For Real Time For Nfv Tus" and version "8.4"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux For Real Time For Nfv Tus Search vendor "Redhat" for product "Enterprise Linux For Real Time For Nfv Tus"				8.6 Search vendor "Redhat" for product "Enterprise Linux For Real Time For Nfv Tus" and version "8.6"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux For Real Time Tus Search vendor "Redhat" for product "Enterprise Linux For Real Time Tus"				8.2 Search vendor "Redhat" for product "Enterprise Linux For Real Time Tus" and version "8.2"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux For Real Time Tus Search vendor "Redhat" for product "Enterprise Linux For Real Time Tus"				8.4 Search vendor "Redhat" for product "Enterprise Linux For Real Time Tus" and version "8.4"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux For Real Time Tus Search vendor "Redhat" for product "Enterprise Linux For Real Time Tus"				8.6 Search vendor "Redhat" for product "Enterprise Linux For Real Time Tus" and version "8.6"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server"				7.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "7.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus"				8.2 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "8.2"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus"				8.4 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "8.4"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus"				8.6 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "8.6"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Tus Search vendor "Redhat" for product "Enterprise Linux Server Tus"				8.2 Search vendor "Redhat" for product "Enterprise Linux Server Tus" and version "8.2"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Tus Search vendor "Redhat" for product "Enterprise Linux Server Tus"				8.4 Search vendor "Redhat" for product "Enterprise Linux Server Tus" and version "8.4"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Tus Search vendor "Redhat" for product "Enterprise Linux Server Tus"				8.6 Search vendor "Redhat" for product "Enterprise Linux Server Tus" and version "8.6"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation"				7.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "7.0"		-		Affected