Linux Kernel ksmbd out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Linux Kernel. Affected by this vulnerability is an unknown functionality of the component ksmbd. Executing a manipulation can lead to out-of-bounds. This vulnerability appears as CVE-2023-39179. The attack may be performed from remote. There is no available exploit. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability has been found in Linux Kernel (the affected version unknown) and classified as problematic. This vulnerability affects an unknown part of the component ksmbd. 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 flaw was found within the handling of SMB2 read requests in the kernel ksmbd module. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this to disclose sensitive information on affected installations of Linux. Only systems with ksmbd enabled are vulnerable to this CVE.

The advisory is available at zerodayinitiative.com. This vulnerability was named CVE-2023-39179 since 07/25/2023. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available.

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

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Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.8

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 7.5
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: No
Local: No
Remote: Yes

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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: lore.kernel.org

Timelineinfo

07/25/2023 🔍
06/10/2024 +321 days 🔍
06/10/2024 +0 days 🔍
08/06/2025 +422 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: zerodayinitiative.com
Status: Confirmed

CVE: CVE-2023-39179 (🔍)
GCVE (CVE): GCVE-0-2023-39179
GCVE (VulDB): GCVE-100-267718

Entryinfo

Created: 06/10/2024 21:48
Updated: 08/06/2025 15:33
Changes: 06/10/2024 21:48 (53), 11/18/2024 13:39 (13), 08/06/2025 15:33 (12)
Complete: 🔍
Cache ID: 216::103

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