Linux Kernel up to 6.12.100/6.18.41/7.1.5/7.2-rc4 ALSA cs35l41_get_acpi_mute_state null pointer dereference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.5$0-$5k1.05

Summaryinfo

A vulnerability, which was classified as very critical, was found in Linux Kernel up to 6.12.100/6.18.41/7.1.5/7.2-rc4. The impacted element is the function cs35l41_get_acpi_mute_state of the component ALSA. Such manipulation leads to null pointer dereference. This vulnerability is documented as CVE-2026-68346. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.12.100/6.18.41/7.1.5/7.2-rc4. It has been rated as very critical. Affected by this issue is the function cs35l41_get_acpi_mute_state of the component ALSA. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at git.kernel.org. This vulnerability is handled as CVE-2026-68346 since 07/30/2026. The exploitation is known to be easy. The attack may be launched remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/10/2026).

Upgrading to version 6.12.101, 6.18.42, 7.1.6 or 7.2-rc5 eliminates this vulnerability. Applying the patch 7fea0c89ed39a13d9a31163a74f8c62de30a4ffc/08433c71f15984ddd5f5a307cf3f0aa9b84583aa/d5dfdf43259ad9d054052012095b1630e7366dcf/3b597d24dc0455ae926f1053f97c2725038fc3cd is able to eliminate this problem.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Vendor

Name

Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.9
VulDB Meta Temp Score: 9.5

VulDB Base Score: 9.9
VulDB Temp Score: 9.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.12.101/6.18.42/7.1.6/7.2-rc5
Patch: 7fea0c89ed39a13d9a31163a74f8c62de30a4ffc/08433c71f15984ddd5f5a307cf3f0aa9b84583aa/d5dfdf43259ad9d054052012095b1630e7366dcf/3b597d24dc0455ae926f1053f97c2725038fc3cd

Timelineinfo

07/30/2026 CVE reserved
08/10/2026 +11 days Advisory disclosed
08/10/2026 +0 days VulDB entry created
08/10/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-68346 (🔒)
GCVE (CVE): GCVE-0-2026-68346
GCVE (VulDB): GCVE-100-387746

Entryinfo

Created: 08/10/2026 18:20
Changes: 08/10/2026 18:20 (59)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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