CVE-2025-67246

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:ludashi:ludashi_driver:*:*:*:*:*:*:*:*", "matchCriteriaId": "63FA880E-9340-4A37-909B-FE3DFB2413AB", "versionEndExcluding": "5.1025", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A local information disclosure vulnerability exists in the Ludashi driver before 5.1025 due to a lack of access control in the IOCTL handler. This driver exposes a device interface accessible to a normal user and handles attacker-controlled structures containing the lower 4GB of physical addresses. The handler maps arbitrary physical memory via MmMapIoSpace and copies data back to user mode without verifying the caller's privileges or the target address range. This allows unprivileged users to read arbitrary physical memory, potentially exposing kernel data structures, kernel pointers, security tokens, and other sensitive information. This vulnerability can be further exploited to bypass the Kernel Address Space Layout Rules (KASLR) and achieve local privilege escalation."}, {"lang": "es", "value": "Una vulnerabilidad de revelaci\u00f3n de informaci\u00f3n local existe en el controlador Ludashi anterior a la versi\u00f3n 5.1025 debido a una falta de control de acceso en el controlador IOCTL. Este controlador expone una interfaz de dispositivo accesible para un usuario normal y maneja estructuras controladas por el atacante que contienen los 4 GB inferiores de direcciones f\u00edsicas. El controlador mapea memoria f\u00edsica arbitraria a trav\u00e9s de MmMapIoSpace y copia datos de vuelta al modo de usuario sin verificar los privilegios del llamador o el rango de direcciones objetivo. Esto permite a usuarios sin privilegios leer memoria f\u00edsica arbitraria, exponiendo potencialmente estructuras de datos del kernel, punteros del kernel, tokens de seguridad y otra informaci\u00f3n sensible. Esta vulnerabilidad puede ser explotada a\u00fan m\u00e1s para eludir las Reglas de Dise\u00f1o del Espacio de Direcciones del Kernel (KASLR) y lograr una escalada de privilegios local."}], "id": "CVE-2025-67246", "lastModified": "2026-07-05T02:17:34.403", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 7.3, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.0, "impactScore": 4.7, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-67246", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-01-15T16:00:53.754701Z", "version": "2.0.3"}}]}, "published": "2026-01-15T16:16:12.450", "references": [{"source": "cve@mitre.org", "url": "https://github.com/CDipper/CVE-2025-67246"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/CDipper/CVE-Publication"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-269"}, {"lang": "en", "value": "CWE-732"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"analysis": {"en": {"generated_at": "2026-04-20T15:58:20.423907+00:00", "value": {"mitigation_remediation": ["Apply the latest Ludashi driver release (5.1025 or newer) which removes the unchecked mapping logic.", "Restrict the device file permissions so that only privileged processes or the root user can open it, mitigating the read capability for regular users.", "If the driver is not required for your production environment, disable or uninstall it to remove the attack surface."], "summary": {"action": "Immediate Patch", "impact": "Local Privilege Escalation"}, "threat_synthesis": {"affected_systems": "The vulnerability affects systems that install the Ludashi driver version 5.1024 or earlier. The driver registers a device interface that is globally accessible to normal users. Any installation using these older driver versions is susceptible; newer releases from 5.1025 onward contain the fix and therefore are not affected.", "description_and_impact": "The Ludashi driver exposed before version 5.1025 contains an access\u2011control flaw in its IOCTL handler. The driver accepts structures from any local user and maps the supplied lower 4\u202fGB of physical addresses into kernel space with MmMapIoSpace. It then copies the contents back to user mode without checking the caller\u2019s privileges or the validity of the address range. This allows an unprivileged user to read arbitrary physical memory, potentially leaking kernel data structures, pointers, security tokens, and other sensitive information. The disclosed information can be used to defeat KASLR and elevate to higher privileges locally.", "risk_and_exploitability": "Security analysts have rated the flaw with a CVSS score of 7.3, indicating significant impact. The EPSS score is below 1\u202f%, suggesting a low current exploitation probability, and the flaw is not currently listed in CISA\u2019s KEV catalog. However, since the flaw is exploitable by a local user, an attacker can leverage it to read kernel memory and potentially gain privileged kernel access. The attack requires only low technical skill to invoke the vulnerable IOCTL and does not rely on network exposure."}}}}, "created": "2026-01-16T14:09:05.513293+00:00", "title": "Local Driver Vulnerability Allows Unprivileged Physical Memory Read and Privilege Escalation", "updated": "2026-04-20T16:00:10.647628+00:00", "vendors": ["ludashi", "ludashi$PRODUCT$driver"]}