In the Linux kernel, the following vulnerability has been resolved: ACPI: NFIT: core: Fix possible NULL pointer dereference After commit… (CVE-2026-64511)
A vulnerability in the Linux kernel's ACPI NFIT core component could lead to a NULL pointer dereference. This occurs when the NFIT notify handler is installed before verifying the presence of the NFIT table, potentially causing a NULL pointer dereference if a specific notification is triggered without the NFIT table being present. The issue was fixed by adding a NULL check in the notification handler function.
AI Analysis
Technical Summary
The Linux kernel ACPI NFIT core had a vulnerability where the acpi_nfit_probe() function installed a notify handler before confirming the NFIT table's presence. If the NFIT table was absent, the function returned early without allocating the acpi_desc object or setting the driver data pointer. If the platform firmware then triggered an NFIT_NOTIFY_UC_MEMORY_ERROR notification, the acpi_nfit_uc_error_notify() function would dereference a NULL pointer, causing a potential kernel crash. The fix involved adding a NULL pointer check in acpi_nfit_uc_error_notify() to prevent this dereference.
Potential Impact
This vulnerability could cause a kernel NULL pointer dereference leading to a denial of service (system crash) if exploited. There is no indication of privilege escalation or code execution from the provided data.
Mitigation Recommendations
A fix for this vulnerability has been implemented in the Linux kernel by adding a NULL pointer check in the affected notification handler. Users should apply the official Linux kernel updates that include this fix. Patch status is not explicitly stated in the provided data; therefore, check the Linux kernel vendor advisory or source repository for the exact fixed version and update accordingly.
In the Linux kernel, the following vulnerability has been resolved: ACPI: NFIT: core: Fix possible NULL pointer dereference After commit… (CVE-2026-64511)
Description
A vulnerability in the Linux kernel's ACPI NFIT core component could lead to a NULL pointer dereference. This occurs when the NFIT notify handler is installed before verifying the presence of the NFIT table, potentially causing a NULL pointer dereference if a specific notification is triggered without the NFIT table being present. The issue was fixed by adding a NULL check in the notification handler function.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel ACPI NFIT core had a vulnerability where the acpi_nfit_probe() function installed a notify handler before confirming the NFIT table's presence. If the NFIT table was absent, the function returned early without allocating the acpi_desc object or setting the driver data pointer. If the platform firmware then triggered an NFIT_NOTIFY_UC_MEMORY_ERROR notification, the acpi_nfit_uc_error_notify() function would dereference a NULL pointer, causing a potential kernel crash. The fix involved adding a NULL pointer check in acpi_nfit_uc_error_notify() to prevent this dereference.
Potential Impact
This vulnerability could cause a kernel NULL pointer dereference leading to a denial of service (system crash) if exploited. There is no indication of privilege escalation or code execution from the provided data.
Mitigation Recommendations
A fix for this vulnerability has been implemented in the Linux kernel by adding a NULL pointer check in the affected notification handler. Users should apply the official Linux kernel updates that include this fix. Patch status is not explicitly stated in the provided data; therefore, check the Linux kernel vendor advisory or source repository for the exact fixed version and update accordingly.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-fx53-fh8q-8mmr
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-64511"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a6542069c2644c7f8082094
Added to database: 07/25/2026, 23:08:54 UTC
Last enriched: 07/25/2026, 23:14:16 UTC
Last updated: 07/26/2026, 03:42:36 UTC
Views: 4
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