CVE-2019-15666

kernel: out-of-bounds array access in __xfrm_policy_unlink

Severity Score

4.4

*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 before 5.0.19. There is an out-of-bounds array access in __xfrm_policy_unlink, which will cause denial of service, because verify_newpolicy_info in net/xfrm/xfrm_user.c mishandles directory validation.

Se descubrió un fallo en el núcleo de Linux en versiones anteriores a 5.0.19. Hay un acceso a array fuera de límites en __xfrm_policy_unlink, lo que causará una denegación del servicio, ya que verify_newpolicy_info en net/xfrm/xfrm_user.c gestiona mal la validación de directorios.

A flaw was found in the Linux kernel. When xfrm policy removal occurs a system crash could occur. These policy changes generally occur through the ip command or a netlink socket.

The kernel-alt packages provide the Linux kernel version 4.x. Issues addressed include buffer overflow, denial of service, heap overflow, and null pointer vulnerabilities.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

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

2019-08-27 CVE Reserved
2019-08-27 CVE Published
2024-08-05 CVE Updated
2025-05-04 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-125: Out-of-bounds Read
CWE-400: Uncontrolled Resource Consumption

CAPEC

References (10)

URL	Tag	Source
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.19	Release Notes
https://lists.debian.org/debian-lts-announce/2019/09/msg00014.html	Mailing List
https://lists.debian.org/debian-lts-announce/2019/09/msg00015.html	Mailing List
https://security.netapp.com/advisory/ntap-20191004-0001	Third Party Advisory
https://support.f5.com/csp/article/K53420251?utm_source=f5support&amp%3Butm_medium=RSS	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b805d78d300bcf2c83d6df7da0c818b0fee41427	2023-11-07

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html	2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html	2023-11-07
https://access.redhat.com/security/cve/CVE-2019-15666	2020-04-16
https://bugzilla.redhat.com/show_bug.cgi?id=1747334	2020-04-16

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"				< 5.0.19 Search vendor "Linux" for product "Linux Kernel" and version " < 5.0.19"		-		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
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				15.0 Search vendor "Opensuse" for product "Leap" and version "15.0"		-		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