Riskcovery

CVE-2026-68346

ALSA: hda: cs35l41: validate and free ACPI mute object

State
Published
Severity
Not scored
Published
Aug 10, 2026
Updated
Aug 17, 2026
Reserved
Jul 30, 2026

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

ALSA: hda: cs35l41: validate and free ACPI mute object

cs35l41_get_acpi_mute_state() evaluates a _DSM method to get the ACPI mute state and reads the first byte from the returned object.

However, the returned ACPI object is owned by the caller and is never freed after use, so each successful query leaks the _DSM result object.

The code also assumes that the returned object is a buffer with at least one byte. A malformed firmware response can return a different object type or an empty buffer, and the direct ret->buffer.pointer dereference can then access an invalid pointer.

Use the typed _DSM helper, validate that the returned buffer contains at least one byte, and free the ACPI object after reading it.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 447106e92a0c86c332d40710436f38f64c322cd6 to before 7fea0c89ed39a13d9a31163a74f8c62de30a4ffcAffected
  • 447106e92a0c86c332d40710436f38f64c322cd6 to before 08433c71f15984ddd5f5a307cf3f0aa9b84583aaAffected
  • 447106e92a0c86c332d40710436f38f64c322cd6 to before d5dfdf43259ad9d054052012095b1630e7366dcfAffected
  • 447106e92a0c86c332d40710436f38f64c322cd6 to before 3b597d24dc0455ae926f1053f97c2725038fc3cdAffected
LinuxLinux
  • 6.7Affected
  • before 6.7Not affected
  • 6.12.101 through 6.12.*Not affected
  • 6.18.42 through 6.18.*Not affected
  • 7.1.6 through 7.1.*Not affected
  • 7.2 and laterNot affected

References

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