CVE-2026-0648

{"id": "CVE-2026-0648", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "emo@eclipse.org", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 1.1}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.3, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 1.0}]}, "published": "2026-01-27T16:16:35.107", "references": [{"url": "https://github.com/eclipse-threadx/threadx/security/advisories/GHSA-xj75-fc68-h4rw", "tags": ["Third Party Advisory"], "source": "emo@eclipse.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "emo@eclipse.org", "description": [{"lang": "en", "value": "CWE-253"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "The vulnerability stems from an incorrect error-checking logic in the CreateCounter()\u00a0function (in threadx/utility/rtos_compatibility_layers/OSEK/tx_osek.c) when handling the return value of osek_get_counter(). Specifically, the current code checks if cntr_id\u00a0equals 0u\u00a0to determine failure, but @osek_get_counter()\u00a0actually returns E_OS_SYS_STACK\u00a0(defined as 12U) when it fails. This mismatch causes the error branch to never execute even when the counter pool is exhausted.\n\nAs a result, when the counter pool is depleted, the code proceeds to cast the error code (12U) to a pointer (OSEK_COUNTER *), creating a wild pointer. Subsequent writes to members of this pointer lead to writes to illegal memory addresses (e.g., 0x0000000C), which can trigger immediate HardFaults or silent memory corruption.\n\nThis vulnerability poses significant risks, including potential denial-of-service attacks (via repeated calls to exhaust the counter pool) and unauthorized memory access."}, {"lang": "es", "value": "La vulnerabilidad se deriva de una l\u00f3gica incorrecta de comprobaci\u00f3n de errores en la funci\u00f3n CreateCounter() (en threadx/utility/rtos_compatibility_layers/OSEK/tx_osek.c) al manejar el valor de retorno de osek_get_counter(). Espec\u00edficamente, el c\u00f3digo actual comprueba si cntr_id es igual a 0u para determinar un fallo, pero @osek_get_counter() en realidad devuelve E_OS_SYS_STACK (definido como 12U) cuando falla. Esta discrepancia hace que la rama de error nunca se ejecute, incluso cuando el pool de contadores est\u00e1 agotado.\n\nComo resultado, cuando el pool de contadores se agota, el c\u00f3digo procede a convertir el c\u00f3digo de error (12U) a un puntero (OSEK_COUNTER *), creando un puntero salvaje. Las escrituras posteriores a miembros de este puntero conducen a escrituras en direcciones de memoria ilegales (por ejemplo, 0x0000000C), lo que puede desencadenar HardFaults inmediatos o corrupci\u00f3n de memoria silenciosa.\n\nEsta vulnerabilidad plantea riesgos significativos, incluyendo posibles ataques de denegaci\u00f3n de servicio (mediante llamadas repetidas para agotar el pool de contadores) y acceso no autorizado a la memoria."}], "lastModified": "2026-04-02T20:30:57.860", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:eclipse:threadx:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "77069C96-3BA5-4AC9-92D4-6753DE8FC8A6", "versionEndExcluding": "6.4.5", "versionStartIncluding": "6.1.7"}], "operator": "OR"}]}], "sourceIdentifier": "emo@eclipse.org"}