VDB-241573 · CVE-2023-39189 · EUVD-2023-42924

Linux Kernel up to 6.5.x Netfilter nfnetlink_osf.c nf_osf_match_one out-of-bounds

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.
4.8	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Linux Kernel up to 6.5.x and classified as problematic. This affects the function nf_osf_match_one of the file net/netfilter/nfnetlink_osf.c of the component Netfilter. This manipulation causes out-of-bounds. This vulnerability appears as CVE-2023-39189. The attack requires local access. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 6.5.x (Operating System) and classified as problematic. Affected by this vulnerability is the function nf_osf_match_one of the file net/netfilter/nfnetlink_osf.c of the component Netfilter. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality.

The weakness was presented 10/09/2023. The advisory is shared at bugzilla.redhat.com. This vulnerability is known as CVE-2023-39189 since 07/25/2023. Technical details are known, but no exploit is available.

Upgrading to version 6.6-rc1 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch f4f8a7803119005e87b716874bec07c751efafec is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-42924). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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: 4.8
VulDB Meta Temp Score: 4.8

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.0
NVD Vector: 🔍

CNA Base Score: 5.1
CNA Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 6.6-rc1
Patch: f4f8a7803119005e87b716874bec07c751efafec

Timelineinfo

07/25/2023 🔍
10/09/2023 +76 days 🔍
10/09/2023 +0 days 🔍
07/24/2025 +654 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: bugzilla.redhat.com
Status: Confirmed

CVE: CVE-2023-39189 (🔍)
GCVE (CVE): GCVE-0-2023-39189
GCVE (VulDB): GCVE-100-241573
EUVD: 🔍

Entryinfo

Created: 10/09/2023 15:05
Updated: 07/24/2025 02:46
Changes: 10/09/2023 15:05 (45), 10/27/2023 15:28 (1), 09/14/2024 00:15 (36), 07/24/2025 02:46 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.