Linux Kernel up to 6.16.3 iris_hfi_gen2_handle_system_error null pointer dereference

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

Summaryinfo

A vulnerability classified as critical has been found in Linux Kernel up to 6.16.3. This issue affects the function iris_hfi_gen2_handle_system_error. This manipulation causes null pointer dereference. The identification of this vulnerability is CVE-2025-39708. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.16.3. It has been declared as critical. Affected by this vulnerability is the function iris_hfi_gen2_handle_system_error. 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: media: iris: Fix NULL pointer dereference A warning reported by smatch indicated a possible null pointer dereference where one of the arguments to API "iris_hfi_gen2_handle_system_error" could sometimes be null. To fix this, add a check to validate that the argument passed is not null before accessing its members.

The advisory is shared at git.kernel.org. This vulnerability is known as CVE-2025-39708 since 04/16/2025. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 261654 (Linux Distros Unpatched Vulnerability : CVE-2025-39708), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.16.4 or 6.17-rc1 eliminates this vulnerability. Applying the patch 992ddee3c0da5f113ba86892ace467c1ac645538/0f837559ccdd275c5a059e6ac4d5034b03409f1d 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 (261654) and CERT Bund (WID-SEC-2025-1988). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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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Version

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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: 261654
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-39708

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.16.4/6.17-rc1
Patch: 992ddee3c0da5f113ba86892ace467c1ac645538/0f837559ccdd275c5a059e6ac4d5034b03409f1d

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-2025-39708 (🔒)
GCVE (CVE): GCVE-0-2025-39708
GCVE (VulDB): GCVE-100-322909
CERT Bund: WID-SEC-2025-1988 - Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 09/05/2025 21:57
Updated: 02/09/2026 19:21
Changes: 09/05/2025 21:57 (58), 09/07/2025 00:46 (2), 11/06/2025 20:39 (7), 11/26/2025 23:09 (10), 11/27/2025 19:49 (1), 01/03/2026 15:02 (1), 01/20/2026 09:40 (1), 02/09/2026 19:21 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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