Linux Kernel up to 6.6.108/6.12.49/6.16.9 vhost_task_create privilege escalation

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.6.108/6.12.49/6.16.9. It has been rated as problematic. This affects the function vhost_task_create. The manipulation leads to an unknown weakness. This vulnerability is uniquely identified as CVE-2025-40024. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.6.108/6.12.49/6.16.9. It has been rated as problematic. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: vhost: Take a reference on the task in struct vhost_task. vhost_task_create() creates a task and keeps a reference to its task_struct. That task may exit early via a signal and its task_struct will be released. A pending vhost_task_wake() will then attempt to wake the task and access a task_struct which is no longer there. Acquire a reference on the task_struct while creating the thread and release the reference while the struct vhost_task itself is removed. If the task exits early due to a signal, then the vhost_task_wake() will still access a valid task_struct. The wake is safe and will be skipped in this case.

The advisory is shared at git.kernel.org. The identification of this vulnerability is CVE-2025-40024 since 04/16/2025. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/02/2026).

The vulnerability scanner Nessus provides a plugin with the ID 279677 (openSUSE 16 Security Update : kernel (openSUSE-SU-2025:20172-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.6.109, 6.12.50 or 6.16.10 eliminates this vulnerability. Applying the patch 82a1463c968b1a6ae598a4f2fcef17b71bb7d3a0/d2be773a92874a070215b51b730cb2b1eaa8fae2/7ce635b3d3aba43296b62b5a2d97c008bc51cbd2/afe16653e05db07d658b55245c7a2e0603f136c0 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 (279677) and CERT Bund (WID-SEC-2025-2407). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Debian Linux
  • Google Cloud Platform
  • Amazon Linux 2
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • Open Source Linux Kernel
  • Dell NetWorker

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

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

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Privilege escalation
CWE: Unknown
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 279677
Nessus Name: openSUSE 16 Security Update : kernel (openSUSE-SU-2025:20172-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.6.109/6.12.50/6.16.10
Patch: 82a1463c968b1a6ae598a4f2fcef17b71bb7d3a0/d2be773a92874a070215b51b730cb2b1eaa8fae2/7ce635b3d3aba43296b62b5a2d97c008bc51cbd2/afe16653e05db07d658b55245c7a2e0603f136c0

Timelineinfo

04/16/2025 CVE reserved
10/24/2025 +191 days Advisory disclosed
10/24/2025 +0 days VulDB entry created
02/02/2026 +101 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-40024 (🔒)
GCVE (CVE): GCVE-0-2025-40024
GCVE (VulDB): GCVE-100-329777
CERT Bund: WID-SEC-2025-2407 - Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 10/24/2025 15:29
Updated: 02/02/2026 11:04
Changes: 10/24/2025 15:29 (56), 10/28/2025 09:54 (7), 12/09/2025 10:18 (1), 12/24/2025 20:53 (2), 02/02/2026 11:04 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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