Linux Kernel up to 5.19-rc3 udmabuf udmabuf.c udmabuf_vm_fault array index

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Linux Kernel up to 5.19-rc3. This impacts the function udmabuf_vm_fault of the file drivers/dma-buf/udmabuf.c of the component udmabuf. Performing a manipulation results in array index. This vulnerability is reported as CVE-2023-2008. The attack requires a local approach. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 5.19-rc3 (Operating System). This affects the function udmabuf_vm_fault of the file drivers/dma-buf/udmabuf.c of the component udmabuf. The manipulation with an unknown input leads to a array index vulnerability. CWE is classifying the issue as CWE-129. The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A flaw was found in the Linux kernel's udmabuf device driver, within a fault handler. This issue occurs due to the lack of proper validation of user-supplied data, which can result in memory access past the end of an array. This may allow an attacker to escalate privileges and execute arbitrary code in the context of the kernel.

The weakness was disclosed 04/14/2023. It is possible to read the advisory at zerodayinitiative.com. This vulnerability is uniquely identified as CVE-2023-2008 since 04/12/2023. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 5.19-rc4 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 05b252cccb2e5c3f56119d25de684b4f810ba4 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-2023-33538). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.5

VulDB Base Score: 6.7
VulDB Temp Score: 6.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 8.2
CNA Vector: 🔍

ADP CISA Base Score: 7.8
ADP CISA Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Array index
CWE: CWE-129 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.19-rc4
Patch: 05b252cccb2e5c3f56119d25de684b4f810ba4

Timelineinfo

04/12/2023 🔍
04/14/2023 +2 days 🔍
04/14/2023 +0 days 🔍
08/14/2026 +1218 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 05b252cccb2e5c3f56119d25de684b4f810ba4
Status: Confirmed

CVE: CVE-2023-2008 (🔍)
GCVE (CVE): GCVE-0-2023-2008
GCVE (VulDB): GCVE-100-225927
EUVD: 🔍

Entryinfo

Created: 04/14/2023 09:18
Updated: 08/14/2026 02:11
Changes: 04/14/2023 09:18 (45), 04/30/2023 17:17 (2), 04/30/2023 17:24 (11), 04/30/2023 17:32 (1), 12/17/2025 00:39 (16), 08/14/2026 02:11 (21)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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