Linux Kernel up to 6.7.11/6.8.2 ksmbd smb_strndup_from_utf16 out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Linux Kernel up to 6.7.11/6.8.2. Affected is the function smb_strndup_from_utf16 of the component ksmbd. Executing a manipulation can lead to out-of-bounds. The identification of this vulnerability is CVE-2024-26954. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 6.7.11/6.8.2 and classified as problematic. This vulnerability affects the function smb_strndup_from_utf16 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. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix slab-out-of-bounds in smb_strndup_from_utf16() If ->NameOffset of smb2_create_req is smaller than Buffer offset of smb2_create_req, slab-out-of-bounds read can happen from smb2_open. This patch set the minimum value of the name offset to the buffer offset to validate name length of smb2_create_req().

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2024-26954 since 02/19/2024. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 211777 (Debian dsa-5818 : affs-modules-6.1.0-21-4kc-malta-di - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.7.12, 6.8.3 or 6.9-rc1 eliminates this vulnerability. Applying the patch 3b8da67191e9/4f97e6a9d62c/a80a486d72e2 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (211777) and CERT Bund (WID-SEC-2024-1008). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • Oracle VM
  • EMC Avamar
  • IBM QRadar SIEM
  • Dell NetWorker
  • IBM Security Guardium
  • RESF Rocky Linux
  • Broadcom Brocade SANnav
  • Open Source Linux Kernel
  • IBM Business Automation Workflow
  • IBM Spectrum Protect Plus
  • Dell Avamar
  • Juniper Junos Space
  • IBM DataPower Gateway
  • IBM Storage Scale System
  • SolarWinds Security Event Manager
  • Dell PowerProtect Data Domain
  • Dell PowerScale OneFS

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.1
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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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: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 211777
Nessus Name: Debian dsa-5818 : affs-modules-6.1.0-21-4kc-malta-di - security update

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 6.7.12/6.8.3/6.9-rc1
Patch: 3b8da67191e9/4f97e6a9d62c/a80a486d72e2

Timelineinfo

02/19/2024 🔍
05/01/2024 +71 days 🔍
05/01/2024 +0 days 🔍
01/26/2026 +635 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2024-26954 (🔍)
GCVE (CVE): GCVE-0-2024-26954
GCVE (VulDB): GCVE-100-262624
CERT Bund: WID-SEC-2024-1008 - Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 05/01/2024 08:19
Updated: 01/26/2026 18:01
Changes: 05/01/2024 08:19 (58), 11/25/2024 08:13 (3), 12/02/2024 12:29 (1), 08/02/2025 22:36 (7), 09/11/2025 15:28 (11), 11/10/2025 16:26 (1), 01/26/2026 18:01 (1)
Complete: 🔍
Cache ID: 216::103

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