In the Linux kernel, the following vulnerability has been resolved: ASoC: SDCA: fix NULL pointer dereference in sdca_dev_unregister_functions… (CVE-2026-53348)
A vulnerability in the Linux kernel's ASoC SDCA component caused a NULL pointer dereference in the sdca_dev_unregister_functions function. This occurs when the function iterates over SDCA function descriptors without checking for NULL pointers, leading to a kernel crash (NULL pointer dereference). The issue arises during device cleanup races or partial function registration failures. The vulnerability has been fixed by adding NULL pointer checks, making the unregister function idempotent, and rolling back partial registrations.
AI Analysis
Technical Summary
The Linux kernel ASoC SDCA subsystem had a NULL pointer dereference vulnerability in sdca_dev_unregister_functions due to lack of NULL checks on func_dev entries. This could cause a kernel oops during device cleanup, especially when function registration fails partway or races with probe deferral. The fix includes adding NULL guards in sdca_dev_unregister(), skipping NULL entries and clearing them after unregistration to prevent double invocation, and rolling back partial registrations to avoid inconsistent states.
Potential Impact
This vulnerability leads to a kernel NULL pointer dereference causing a kernel crash (kernel oops) and denial of service. There is no impact on confidentiality or integrity. The issue affects system stability and availability when triggered.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. The fix involves kernel code changes to add NULL pointer checks and improve function registration rollback. Until patched, avoid conditions that trigger partial function registration failures or device cleanup races if possible.
In the Linux kernel, the following vulnerability has been resolved: ASoC: SDCA: fix NULL pointer dereference in sdca_dev_unregister_functions… (CVE-2026-53348)
Description
A vulnerability in the Linux kernel's ASoC SDCA component caused a NULL pointer dereference in the sdca_dev_unregister_functions function. This occurs when the function iterates over SDCA function descriptors without checking for NULL pointers, leading to a kernel crash (NULL pointer dereference). The issue arises during device cleanup races or partial function registration failures. The vulnerability has been fixed by adding NULL pointer checks, making the unregister function idempotent, and rolling back partial registrations.
CVSS v3.1
Score 5.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel ASoC SDCA subsystem had a NULL pointer dereference vulnerability in sdca_dev_unregister_functions due to lack of NULL checks on func_dev entries. This could cause a kernel oops during device cleanup, especially when function registration fails partway or races with probe deferral. The fix includes adding NULL guards in sdca_dev_unregister(), skipping NULL entries and clearing them after unregistration to prevent double invocation, and rolling back partial registrations to avoid inconsistent states.
Potential Impact
This vulnerability leads to a kernel NULL pointer dereference causing a kernel crash (kernel oops) and denial of service. There is no impact on confidentiality or integrity. The issue affects system stability and availability when triggered.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. The fix involves kernel code changes to add NULL pointer checks and improve function registration rollback. Until patched, avoid conditions that trigger partial function registration failures or device cleanup races if possible.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-7gm6-6488-mq68
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-53348"]
- Ecosystems
- []
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6a6150e99c2644c7f8da2320
Added to database: 07/22/2026, 23:23:21 UTC
Last enriched: 07/22/2026, 23:38:39 UTC
Last updated: 07/31/2026, 19:24:46 UTC
Views: 9
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