In the Linux kernel, the following vulnerability has been resolved: ASoC: wm_adsp: Fix NULL dereference when removing firmware controls In… (CVE-2026-53350)
A vulnerability in the Linux kernel's ASoC wm_adsp component could cause a NULL pointer dereference when removing firmware controls. This occurs because wm_adsp_control_remove() does not check if the private data pointer is NULL before attempting cleanup. The issue arises in cases where private control data is not created, such as for SYSTEM controls or when a codec driver hides the control. This flaw can lead to a denial of service due to kernel crashes.
AI Analysis
Technical Summary
The Linux kernel's ASoC wm_adsp driver had a NULL pointer dereference vulnerability (CVE-2026-53350) in the wm_adsp_control_remove() function. The function failed to verify that the priv pointer was non-NULL before dereferencing it during control removal. This occurs because certain controls do not have private data allocated, specifically SYSTEM controls or those hidden by codec driver callbacks. Attempting to clean up a NULL priv pointer leads to a kernel NULL dereference and potential denial of service. The vulnerability has been resolved by adding a NULL check before cleanup.
Potential Impact
This vulnerability can cause a denial of service by crashing the Linux kernel when firmware controls are removed and the NULL pointer dereference is triggered. There is no impact on confidentiality or integrity. No known exploits are reported in the wild.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to check the priv pointer for NULL before cleanup in wm_adsp_control_remove(). Users should apply the official kernel update that includes this patch. Since this is a kernel-level issue, updating to the fixed kernel version is the recommended remediation. Patch status is not explicitly confirmed here; users should consult the Linux kernel vendor advisory for the exact fixed versions and update accordingly.
In the Linux kernel, the following vulnerability has been resolved: ASoC: wm_adsp: Fix NULL dereference when removing firmware controls In… (CVE-2026-53350)
Description
A vulnerability in the Linux kernel's ASoC wm_adsp component could cause a NULL pointer dereference when removing firmware controls. This occurs because wm_adsp_control_remove() does not check if the private data pointer is NULL before attempting cleanup. The issue arises in cases where private control data is not created, such as for SYSTEM controls or when a codec driver hides the control. This flaw can lead to a denial of service due to kernel crashes.
CVSS v3.1
Score 5.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel's ASoC wm_adsp driver had a NULL pointer dereference vulnerability (CVE-2026-53350) in the wm_adsp_control_remove() function. The function failed to verify that the priv pointer was non-NULL before dereferencing it during control removal. This occurs because certain controls do not have private data allocated, specifically SYSTEM controls or those hidden by codec driver callbacks. Attempting to clean up a NULL priv pointer leads to a kernel NULL dereference and potential denial of service. The vulnerability has been resolved by adding a NULL check before cleanup.
Potential Impact
This vulnerability can cause a denial of service by crashing the Linux kernel when firmware controls are removed and the NULL pointer dereference is triggered. There is no impact on confidentiality or integrity. No known exploits are reported in the wild.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to check the priv pointer for NULL before cleanup in wm_adsp_control_remove(). Users should apply the official kernel update that includes this patch. Since this is a kernel-level issue, updating to the fixed kernel version is the recommended remediation. Patch status is not explicitly confirmed here; users should consult the Linux kernel vendor advisory for the exact fixed versions and update accordingly.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-q7rw-6rp9-vhj5
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-53350"]
- Ecosystems
- []
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6a6150e79c2644c7f8da2057
Added to database: 07/22/2026, 23:23:19 UTC
Last enriched: 07/22/2026, 23:38:08 UTC
Last updated: 07/31/2026, 19:24:47 UTC
Views: 3
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