VDB-223765 · CVE-2023-1513 · EUVD-2023-23760

Linux Kernel on 32-bit KVM arch/x86/kvm/x86.c kvm_vcpu_ioctl_x86_get_debugregs initialization

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.
3.2	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Linux Kernel on 32-bit and classified as problematic. This vulnerability affects the function kvm_vcpu_ioctl_x86_get_debugregs of the file arch/x86/kvm/x86.c of the component KVM. This manipulation causes initialization. This vulnerability is registered as CVE-2023-1513. The attack needs to be launched locally. No exploit is available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability was found in Linux Kernel on 32-bit (Operating System) (the affected version unknown). It has been declared as problematic. Affected by this vulnerability is the function kvm_vcpu_ioctl_x86_get_debugregs of the file arch/x86/kvm/x86.c of the component KVM. The manipulation with an unknown input leads to a initialization vulnerability. The CWE definition for the vulnerability is CWE-665. The product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used. As an impact it is known to affect confidentiality. The summary by CVE is:

A flaw was found in KVM. When calling the KVM_GET_DEBUGREGS ioctl, on 32-bit systems, there might be some uninitialized portions of the kvm_debugregs structure that could be copied to userspace, causing an information leak.

The weakness was published 03/24/2023 as 2c10b61421a28e95a46ab489fd56c0f442ff6952. The advisory is shared at github.com. This vulnerability is known as CVE-2023-1513 since 03/20/2023. Technical details are known, but no exploit is available.

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 the patch 2c10b61421a28e95a46ab489fd56c0f442ff6952 is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the databases at Tenable (239841) and EUVD (EUVD-2023-23760). 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

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: 3.3
VulDB Meta Temp Score: 3.2

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

NVD Base Score: 3.3
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Initialization
CWE: CWE-665
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: 2c10b61421a28e95a46ab489fd56c0f442ff6952

Timelineinfo

03/20/2023 🔍
03/24/2023 +4 days 🔍
03/24/2023 +0 days 🔍
08/11/2025 +871 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 2c10b61421a28e95a46ab489fd56c0f442ff6952
Status: Confirmed

CVE: CVE-2023-1513 (🔍)
GCVE (CVE): GCVE-0-2023-1513
GCVE (VulDB): GCVE-100-223765
EUVD: 🔍

Entryinfo

Created: 03/24/2023 07:21
Updated: 08/11/2025 08:08
Changes: 03/24/2023 07:21 (45), 04/13/2023 22:19 (9), 06/19/2025 20:57 (17), 08/11/2025 08:08 (1)
Complete: 🔍
Cache ID: 216::103

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