VDB-338019 · CVE-2025-68345 · EUVD-2025-205109

Linux Kernel up to 6.17.12/6.18.1 ALSA cs35l41_hda_read_acpi null pointer dereference

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5.5	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Linux Kernel up to 6.17.12/6.18.1 and classified as critical. Affected by this vulnerability is the function cs35l41_hda_read_acpi of the component ALSA. Performing a manipulation results in null pointer dereference. This vulnerability is cataloged as CVE-2025-68345. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.17.12/6.18.1. It has been classified as critical. This affects the function cs35l41_hda_read_acpi of the component ALSA. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as 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. This is going to have an impact on availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: ALSA: hda: cs35l41: Fix NULL pointer dereference in cs35l41_hda_read_acpi() The acpi_get_first_physical_node() function can return NULL, in which case the get_device() function also returns NULL, but this value is then dereferenced without checking,so add a check to prevent a crash. Found by Linux Verification Center (linuxtesting.org) with SVACE.

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2025-68345 since 12/16/2025. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 279813 (Linux Distros Unpatched Vulnerability : CVE-2025-68345), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.17.13, 6.18.2 or 6.19-rc1 eliminates this vulnerability. Applying the patch c28946b7409b7b68fb0481ec738c8b04578b11c6/343fa9800cf9870ec681e21f0a6f2157b74ae520/c34b04cc6178f33c08331568c7fd25c5b9a39f66 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 (279813), EUVD (EUVD-2025-205109) and CERT Bund (WID-SEC-2025-2920). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

Open Source Linux Kernel

Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

Version

License

open-source

Website

Vendor: https://www.kernel.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.5

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

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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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: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
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Nessus ID: 279813
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-68345

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.17.13/6.18.2/6.19-rc1
Patch: c28946b7409b7b68fb0481ec738c8b04578b11c6/343fa9800cf9870ec681e21f0a6f2157b74ae520/c34b04cc6178f33c08331568c7fd25c5b9a39f66

Timelineinfo

12/16/2025 CVE reserved
12/24/2025 +8 days Advisory disclosed
12/24/2025 +0 days VulDB entry created
01/12/2026 +19 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-68345 (🔒)
GCVE (CVE): GCVE-0-2025-68345
GCVE (VulDB): GCVE-100-338019
EUVD: 🔒
CERT Bund: WID-SEC-2025-2920 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 12/24/2025 14:46
Updated: 01/12/2026 05:59
Changes: 12/24/2025 14:46 (59), 12/25/2025 11:05 (7), 12/28/2025 07:56 (2), 01/12/2026 05:59 (1)
Complete: 🔍
Cache ID: 216::103

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