Linux hwe edge: 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 subsystem could cause a NULL pointer dereference. This occurs when the ACPI notify handler is installed before confirming the presence of the NFIT table, leading to a potential NULL pointer dereference if a specific notification is triggered by platform firmware. The issue has been resolved in updated Linux kernel versions. Multiple Linux kernel subsystems, including ACPI, have had security fixes in recent updates. Users should update to the fixed kernel versions to mitigate this and other vulnerabilities.
AI Analysis
Technical Summary
The Linux kernel vulnerability (CVE-2026-64511) involves the ACPI NFIT core where the acpi_nfit_probe() function installs an ACPI notify handler before verifying the NFIT table's presence. If the NFIT table is absent, the function returns early without allocating the acpi_desc object or setting the driver data pointer. If the platform firmware triggers an NFIT_NOTIFY_UC_MEMORY_ERROR notification at this point, the acpi_nfit_uc_error_notify() function dereferences a NULL pointer, causing a potential kernel crash. The fix adds a NULL check for acpi_desc in acpi_nfit_uc_error_notify() to prevent this dereference. This vulnerability is part of a broader set of Linux kernel security fixes addressing multiple subsystems.
Potential Impact
This vulnerability can cause a NULL pointer dereference in the Linux kernel, potentially leading to a kernel crash or denial of service. There is no indication of remote exploitation or privilege escalation directly from this flaw. It affects system stability and reliability if triggered by platform firmware notifications. The overall severity is medium.
Mitigation Recommendations
A patch is available and included in updated Linux kernel packages for the affected Ubuntu releases. Users should apply the latest kernel updates (e.g., linux-image-7.0.0-1006-gke 7.0.0-1006.7 and later) and reboot their systems to apply the fixes. Due to an ABI change, recompilation and reinstallation of third-party kernel modules may be required. Follow the vendor's update instructions carefully. No additional mitigation is required beyond applying the official updates.
Linux hwe edge: 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 subsystem could cause a NULL pointer dereference. This occurs when the ACPI notify handler is installed before confirming the presence of the NFIT table, leading to a potential NULL pointer dereference if a specific notification is triggered by platform firmware. The issue has been resolved in updated Linux kernel versions. Multiple Linux kernel subsystems, including ACPI, have had security fixes in recent updates. Users should update to the fixed kernel versions to mitigate this and other vulnerabilities.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel vulnerability (CVE-2026-64511) involves the ACPI NFIT core where the acpi_nfit_probe() function installs an ACPI notify handler before verifying the NFIT table's presence. If the NFIT table is absent, the function returns early without allocating the acpi_desc object or setting the driver data pointer. If the platform firmware triggers an NFIT_NOTIFY_UC_MEMORY_ERROR notification at this point, the acpi_nfit_uc_error_notify() function dereferences a NULL pointer, causing a potential kernel crash. The fix adds a NULL check for acpi_desc in acpi_nfit_uc_error_notify() to prevent this dereference. This vulnerability is part of a broader set of Linux kernel security fixes addressing multiple subsystems.
Potential Impact
This vulnerability can cause a NULL pointer dereference in the Linux kernel, potentially leading to a kernel crash or denial of service. There is no indication of remote exploitation or privilege escalation directly from this flaw. It affects system stability and reliability if triggered by platform firmware notifications. The overall severity is medium.
Mitigation Recommendations
A patch is available and included in updated Linux kernel packages for the affected Ubuntu releases. Users should apply the latest kernel updates (e.g., linux-image-7.0.0-1006-gke 7.0.0-1006.7 and later) and reboot their systems to apply the fixes. Due to an ABI change, recompilation and reinstallation of third-party kernel modules may be required. Follow the vendor's update instructions carefully. No additional mitigation is required beyond applying the official updates.
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: 09/07/2026, 17:38:17 UTC
Last updated: 09/08/2026, 22:52:14 UTC
Views: 35
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