VDB-146557 · CVE-2019-19462 · USN-4414-1

Linux Kernel up to 5.4.1 kernel/relay.c relay_open null pointer dereference

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.4	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.4.1. It has been classified as problematic. This issue affects the function relay_open of the file kernel/relay.c. This manipulation causes null pointer dereference. This vulnerability is tracked as CVE-2019-19462. The attack is restricted to local execution. No exploit exists.

Detailsinfo

A vulnerability classified as problematic was found in Linux Kernel up to 5.4.1 (Operating System). Affected by this vulnerability is the function relay_open of the file kernel/relay.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. The summary by CVE is:

relay_open in kernel/relay.c in the Linux kernel through 5.4.1 allows local users to cause a denial of service (such as relay blockage) by triggering a NULL alloc_percpu result.

The weakness was disclosed 11/30/2019. This vulnerability is known as CVE-2019-19462. An attack has to be approached locally. The requirement for exploitation is a single authentication. Technical details are known, but no exploit is available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

Version

License

open-source

Website

Vendor: https://www.kernel.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.4

VulDB Base Score: 3.3
VulDB Temp Score: 3.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/30/2019 🔍
11/30/2019 +0 days 🔍
12/04/2019 +4 days 🔍
03/05/2024 +1553 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-4414-1
Status: Not defined

CVE: CVE-2019-19462 (🔍)
GCVE (CVE): GCVE-0-2019-19462
GCVE (VulDB): GCVE-100-146557

Entryinfo

Created: 12/04/2019 07:53
Updated: 03/05/2024 13:39
Changes: 12/04/2019 07:53 (37), 12/04/2019 07:58 (17), 03/05/2024 13:39 (5)
Complete: 🔍
Cache ID: 216::103