VDB-219338 · CVE-2023-0469 · EUVD-2023-12523

Linux Kernel up to 6.1 RC6 io_uring Subsystem io_uring/filetable.c io_install_fixed_file integer underflow

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5.5	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical was found in Linux Kernel up to 6.1 RC6. This impacts the function io_install_fixed_file of the file io_uring/filetable.c of the component io_uring Subsystem. Such manipulation leads to integer underflow. This vulnerability is listed as CVE-2023-0469. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.1 RC6 (Operating System). It has been rated as critical. Affected by this issue is the function io_install_fixed_file of the file io_uring/filetable.c of the component io_uring Subsystem. The manipulation with an unknown input leads to a integer underflow vulnerability. Using CWE to declare the problem leads to CWE-191. The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result. Impacted is availability. CVE summarizes:

A use-after-free flaw was found in io_uring/filetable.c in io_install_fixed_file in the io_uring subcomponent in the Linux Kernel during call cleanup. This flaw may lead to a denial of service.

The weakness was presented 01/27/2023. The advisory is available at bugzilla.redhat.com. This vulnerability is handled as CVE-2023-0469 since 01/24/2023. 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.

Upgrading to version 6.1 RC7 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (239841) and EUVD (EUVD-2023-12523). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

Version

6.1 RC6

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: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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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: Integer underflow
CWE: CWE-191 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 6.1 RC7

Timelineinfo

01/24/2023 🔍
01/27/2023 +3 days 🔍
01/27/2023 +0 days 🔍
07/07/2025 +892 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: bugzilla.redhat.com
Status: Confirmed

CVE: CVE-2023-0469 (🔍)
GCVE (CVE): GCVE-0-2023-0469
GCVE (VulDB): GCVE-100-219338
EUVD: 🔍

Entryinfo

Created: 01/27/2023 07:47
Updated: 07/07/2025 17:29
Changes: 01/27/2023 07:47 (42), 04/02/2025 00:28 (26), 06/19/2025 19:59 (2), 07/07/2025 17:29 (1)
Complete: 🔍
Cache ID: 216::103

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