CVE-2019-15921

kernel: memory leak in genl_register_family() in net/netlink/genetlink.c

Severity Score

4.7

*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 5.0.6. There is a memory leak issue when idr_alloc() fails in genl_register_family() in net/netlink/genetlink.c.

Se detectó un problema en el kernel de Linux versiones anteriores a 5.0.6. Se presenta un problema de pérdida de memoria cuando la función idr_alloc() presenta un fallo en la función genl_register_family() en el archivo net/netlink/genetlink.c.

A flaw was found in the genl_register_family function in the Linux kernel. An attacker able to induce the error conditions could use this flaw to crash the system. The highest threat from this vulnerability is to system availability.

*Credits: N/A

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-09-04 CVE Reserved
2019-09-04 CVE Published
2024-08-05 CVE Updated
2024-08-05 First Exploit
2024-08-28 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-401: Missing Release of Memory after Effective Lifetime

CAPEC

References (7)

URL	Tag	Source
https://security.netapp.com/advisory/ntap-20191004-0001	Third Party Advisory

URL	Date	SRC
https://github.com/torvalds/linux/commit/ceabee6c59943bdd5e1da1a6a20dc7ee5f8113a2	2024-08-05

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html	2020-08-24
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html	2020-08-24
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.6	2020-08-24
https://access.redhat.com/security/cve/CVE-2019-15921	2019-11-05
https://bugzilla.redhat.com/show_bug.cgi?id=1760958	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"				< 5.0.6 Search vendor "Linux" for product "Linux Kernel" and version " < 5.0.6"		-		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