Linux Kernel up to 6.16.3/6.17-rc2 metric_tbl_addr null pointer dereference

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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Linux Kernel up to 6.16.3/6.17-rc2. This affects the function metric_tbl_addr. This manipulation causes null pointer dereference. This vulnerability is handled as CVE-2025-39678. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.16.3/6.17-rc2. It has been declared as critical. Affected by this vulnerability is the function metric_tbl_addr. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: platform/x86/amd/hsmp: Ensure sock->metric_tbl_addr is non-NULL If metric table address is not allocated, accessing metrics_bin will result in a NULL pointer dereference, so add a check.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2025-39678 since 04/16/2025. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 261608 (Linux Distros Unpatched Vulnerability : CVE-2025-39678), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.16.4 or 6.17-rc3 eliminates this vulnerability. Applying the patch d47782d5c0cb87b9826041f34505580204ccf703/2c78fb287e1f430b929f2e49786518350d15605c 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 (261608) and CERT Bund (WID-SEC-2025-1988). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Debian Linux
  • Google Cloud Platform
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • NetApp FAS
  • NetApp AFF
  • NetApp ActiveIQ Unified Manager
  • SUSE openSUSE
  • RESF Rocky Linux
  • Open Source Linux Kernel
  • Microsoft Azure
  • Dell Secure Connect Gateway
  • IBM QRadar SIEM
  • IBM Security Verify Access
  • Dell NetWorker

Productinfo

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Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
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: 261608
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-39678

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.16.4/6.17-rc3
Patch: d47782d5c0cb87b9826041f34505580204ccf703/2c78fb287e1f430b929f2e49786518350d15605c

Timelineinfo

04/16/2025 CVE reserved
09/05/2025 +142 days Advisory disclosed
09/05/2025 +0 days VulDB entry created
02/09/2026 +157 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-39678 (🔒)
GCVE (CVE): GCVE-0-2025-39678
GCVE (VulDB): GCVE-100-322891
CERT Bund: WID-SEC-2025-1988 - Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 09/05/2025 21:44
Updated: 02/09/2026 11:54
Changes: 09/05/2025 21:44 (58), 09/07/2025 12:18 (2), 09/09/2025 09:28 (7), 11/06/2025 15:58 (1), 11/25/2025 20:57 (1), 11/26/2025 16:04 (10), 11/27/2025 14:46 (1), 12/29/2025 11:03 (1), 01/05/2026 10:32 (1), 02/09/2026 11:54 (1)
Complete: 🔍
Cache ID: 216::103

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