VDB-221540 · CVE-2023-26242 · GCVE-0-2023-26242

Linux Kernel up to 6.1.12 dfl-afu-region.c afu_mmio_region_get_by_offset integer overflow

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.
6.5	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.1.12 and classified as problematic. Affected by this vulnerability is the function afu_mmio_region_get_by_offset of the file drivers/fpga/dfl-afu-region.c. Such manipulation leads to integer overflow. This vulnerability is referenced as CVE-2023-26242. No exploit is available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.1.12 (Operating System) and classified as problematic. Affected by this issue is the function afu_mmio_region_get_by_offset of the file drivers/fpga/dfl-afu-region.c. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. Impacted is confidentiality, integrity, and availability. CVE summarizes:

afu_mmio_region_get_by_offset in drivers/fpga/dfl-afu-region.c in the Linux kernel through 6.1.12 has an integer overflow.

The weakness was published 02/21/2023. The advisory is shared for download at patchwork.kernel.org. This vulnerability is handled as CVE-2023-26242 since 02/21/2023. There are known technical details, but no exploit is available.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at patchwork.kernel.org.

Once again VulDB remains the best source for vulnerability data.

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: 6.6
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

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

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / 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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: patchwork.kernel.org

Timelineinfo

02/21/2023 🔍
02/21/2023 +0 days 🔍
02/21/2023 +0 days 🔍
03/23/2023 +30 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: patchwork.kernel.org
Status: Confirmed

CVE: CVE-2023-26242 (🔍)
GCVE (CVE): GCVE-0-2023-26242
GCVE (VulDB): GCVE-100-221540

Entryinfo

Created: 02/21/2023 07:37
Updated: 03/23/2023 14:54
Changes: 02/21/2023 07:37 (41), 03/23/2023 14:54 (11)
Complete: 🔍
Cache ID: 216::103