VDB-226954 · CVE-2023-2176 · EUVD-2023-33693

Linux Kernel RDMA cma.c compare_netdev_and_ip 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.
7.6	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic was found in Linux Kernel. This affects the function compare_netdev_and_ip of the file drivers/infiniband/core/cma.c of the component RDMA. Executing a manipulation can lead to out-of-bounds. The identification of this vulnerability is CVE-2023-2176. The attack can only be executed locally. There is no exploit available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel (Operating System) (version unknown). This vulnerability affects the function compare_netdev_and_ip of the file drivers/infiniband/core/cma.c of the component RDMA. 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, integrity, and availability. CVE summarizes:

A vulnerability was found in compare_netdev_and_ip in drivers/infiniband/core/cma.c in RDMA in the Linux Kernel. The improper cleanup results in out-of-boundary read, where a local user can utilize this problem to crash the system or escalation of privilege.

The weakness was shared 04/21/2023. The advisory is available at spinics.net. This vulnerability was named CVE-2023-2176 since 04/19/2023. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 239841 (TencentOS Server 4: kernel (TSSA-2024:0960)), which helps to determine the existence of the flaw in a target environment.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at spinics.net.

The vulnerability is also documented in the databases at Tenable (239841) and EUVD (EUVD-2023-33693). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

License

open-source

Website

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

CPE 2.3info

🔍

CPE 2.2info

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.6

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
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: 🔍

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

Nessus ID: 239841
Nessus Name: TencentOS Server 4: kernel (TSSA-2024:0960)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: spinics.net

Timelineinfo

04/19/2023 🔍
04/21/2023 +2 days 🔍
04/21/2023 +0 days 🔍
12/17/2025 +971 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: spinics.net
Status: Confirmed

CVE: CVE-2023-2176 (🔍)
GCVE (CVE): GCVE-0-2023-2176
GCVE (VulDB): GCVE-100-226954
EUVD: 🔍

Entryinfo

Created: 04/21/2023 07:52
Updated: 12/17/2025 15:54
Changes: 04/21/2023 07:52 (42), 05/15/2023 07:15 (10), 06/20/2025 02:40 (17), 12/17/2025 15:54 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.