CVE-2025-40098
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-10-30

Last updated on: 2025-10-30

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: hda: cs35l41: Fix NULL pointer dereference in cs35l41_get_acpi_mute_state() Return value of a function acpi_evaluate_dsm() is dereferenced without checking for NULL, but it is usually checked for this function. acpi_evaluate_dsm() may return NULL, when acpi_evaluate_object() returns acpi_status other than ACPI_SUCCESS, so add a check to prevent the crach. Found by Linux Verification Center (linuxtesting.org) with SVACE.
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Meta Information
Published
2025-10-30
Last Modified
2025-10-30
Generated
2026-06-16
AI Q&A
2025-10-30
EPSS Evaluated
2026-06-14
NVD
CVE-2025-40098
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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Exploitability
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability is a NULL pointer dereference in the Linux kernel's ALSA hda driver for the cs35l41 component. Specifically, the function acpi_evaluate_dsm() can return NULL, but the code did not check for this before dereferencing the return value, which could cause a crash. The fix adds a check to prevent dereferencing NULL pointers.

Impact Analysis

This vulnerability can cause the Linux kernel to crash due to a NULL pointer dereference when handling certain ACPI calls in the ALSA hda cs35l41 driver. This could lead to system instability or denial of service.

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