Linux Kernel up to 6.16.8 ASoC set_tdm_slot null pointer dereference

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5.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.16.8. It has been classified as critical. This affects the function set_tdm_slot of the component ASoC. This manipulation causes null pointer dereference. This vulnerability appears as CVE-2025-39959. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 6.16.8 and classified as critical. Affected by this vulnerability is the function set_tdm_slot of the component ASoC. 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: ASoC: amd: acp: Fix incorrect retrival of acp_chip_info Use dev_get_drvdata(dev->parent) instead of dev_get_platdata(dev) to correctly obtain acp_chip_info members in the acp I2S driver. Previously, some members were not updated properly due to incorrect data access, which could potentially lead to null pointer dereferences. This issue was missed in the earlier commit ("ASoC: amd: acp: Fix NULL pointer deref in acp_i2s_set_tdm_slot"), which only addressed set_tdm_slot(). This change ensures that all relevant functions correctly retrieve acp_chip_info, preventing further null pointer dereference issues.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2025-39959 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 271155 (Linux Distros Unpatched Vulnerability : CVE-2025-39959), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.16.9 eliminates this vulnerability. Applying the patch 65c5cfbd6d938f77a0df3c34855a4f7d8a61fd10/d7871f400cad1da376f1d7724209a1c49226c456 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 (271155) and CERT Bund (WID-SEC-2025-2246). Be aware that VulDB is the high quality source 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
  • IBM QRadar SIEM

Productinfo

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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

AVACAuCIA
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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: 271155
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-39959

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.16.9
Patch: 65c5cfbd6d938f77a0df3c34855a4f7d8a61fd10/d7871f400cad1da376f1d7724209a1c49226c456

Timelineinfo

04/16/2025 CVE reserved
10/09/2025 +176 days Advisory disclosed
10/09/2025 +0 days VulDB entry created
02/13/2026 +127 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-39959 (🔒)
GCVE (CVE): GCVE-0-2025-39959
GCVE (VulDB): GCVE-100-327703
CERT Bund: WID-SEC-2025-2246 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 10/09/2025 12:48
Updated: 02/13/2026 08:52
Changes: 10/09/2025 12:48 (59), 10/09/2025 14:23 (7), 10/22/2025 18:47 (2), 11/21/2025 05:00 (1), 11/30/2025 14:26 (1), 12/22/2025 05:03 (1), 02/03/2026 18:00 (10), 02/13/2026 08:52 (1)
Complete: 🔍
Cache ID: 216::103

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