Linux Kernel up to 6.16.5 object_err allocation of resources

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.
4.9$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Linux Kernel up to 6.16.5. The affected element is the function object_err. Performing a manipulation results in allocation of resources. This vulnerability is known as CVE-2025-39902. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 6.16.5. This affects the function object_err. The manipulation with an unknown input leads to a allocation of resources vulnerability. CWE is classifying the issue as CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: mm/slub: avoid accessing metadata when pointer is invalid in object_err() object_err() reports details of an object for further debugging, such as the freelist pointer, redzone, etc. However, if the pointer is invalid, attempting to access object metadata can lead to a crash since it does not point to a valid object. One known path to the crash is when alloc_consistency_checks() determines the pointer to the allocated object is invalid because of a freelist corruption, and calls object_err() to report it. The debug code should report and handle the corruption gracefully and not crash in the process. In case the pointer is NULL or check_valid_pointer() returns false for the pointer, only print the pointer value and skip accessing metadata.

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2025-39902 since 04/16/2025. The exploitability is told to be difficult. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 270560 (Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2025-1223)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.4.299, 5.10.243, 5.15.192, 6.1.151, 6.6.105, 6.12.46 or 6.16.6 eliminates this vulnerability. Applying the patch 872f2c34ff232af1e65ad2df86d61163c8ffad42/f66012909e7bf383fcdc5850709ed5716073fdc4/7e287256904ee796c9477e3ec92b07f236481ef3/1f0797f17927b5cad0fb7eced422f9a7c30a3191/0ef7058b4dc6fcef622ac23b45225db57f17b83f/dda6ec365ab04067adae40ef17015db447e90736/3baa1da473e6e50281324ff1d332d1a07a3bb02e/b4efccec8d06ceb10a7d34d7b1c449c569d53770 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 (270560) and CERT Bund (WID-SEC-2025-2170). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • Open Source Linux Kernel
  • Dell Secure Connect Gateway

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.9

VulDB Base Score: 4.6
VulDB Temp Score: 4.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

Exploitinginfo

Class: Allocation of resources
CWE: CWE-770 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 270560
Nessus Name: Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2025-1223)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.4.299/5.10.243/5.15.192/6.1.151/6.6.105/6.12.46/6.16.6
Patch: 872f2c34ff232af1e65ad2df86d61163c8ffad42/f66012909e7bf383fcdc5850709ed5716073fdc4/7e287256904ee796c9477e3ec92b07f236481ef3/1f0797f17927b5cad0fb7eced422f9a7c30a3191/0ef7058b4dc6fcef622ac23b45225db57f17b83f/dda6ec365ab04067adae40ef17015db447e90736/3baa1da473e6e50281324ff1d332d1a07a3bb02e/b4efccec8d06ceb10a7d34d7b1c449c569d53770

Timelineinfo

04/16/2025 CVE reserved
10/01/2025 +168 days Advisory disclosed
10/01/2025 +0 days VulDB entry created
01/16/2026 +107 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-39902 (🔒)
GCVE (CVE): GCVE-0-2025-39902
GCVE (VulDB): GCVE-100-326475
CERT Bund: WID-SEC-2025-2170 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 10/01/2025 10:00
Updated: 01/16/2026 20:50
Changes: 10/01/2025 10:00 (58), 10/01/2025 15:59 (7), 10/16/2025 00:15 (2), 11/25/2025 04:26 (1), 12/01/2025 16:40 (1), 01/07/2026 08:50 (1), 01/16/2026 20:50 (11)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to know what is going to be exploited?

We predict KEV entries!