CVE-2025-22039

{"id": "CVE-2025-22039", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "[email protected]", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.1, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 1.8}]}, "published": "2025-04-16T15:15:56.500", "references": [{"url": "https://git.kernel.org/stable/c/443b373a4df5a2cb9f7b8c4658b2afedeb16397f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6a9cd9ff0fa2bcc30b2bfb8bdb161eb20e44b9dc", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6b8d379048b168a0dff5ab1acb975b933f368514", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/beff0bc9d69bc8e733f9bca28e2d3df5b3e10e42", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "[email protected]", "description": [{"lang": "en", "value": "CWE-125"}, {"lang": "en", "value": "CWE-190"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix overflow in dacloffset bounds check\n\nThe dacloffset field was originally typed as int and used in an\nunchecked addition, which could overflow and bypass the existing\nbounds check in both smb_check_perm_dacl() and smb_inherit_dacl().\n\nThis could result in out-of-bounds memory access and a kernel crash\nwhen dereferencing the DACL pointer.\n\nThis patch converts dacloffset to unsigned int and uses\ncheck_add_overflow() to validate access to the DACL."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ksmbd: correcci\u00f3n de desbordamiento en la comprobaci\u00f3n de los l\u00edmites de dacloffset. El campo dacloffset se tipific\u00f3 originalmente como int y se us\u00f3 en una adici\u00f3n sin comprobar, lo que podr\u00eda desbordarse y omitir la comprobaci\u00f3n de los l\u00edmites existente tanto en smb_check_perm_dacl() como en smb_inherit_dacl(). Esto podr\u00eda provocar un acceso a memoria fuera de los l\u00edmites y un fallo del kernel al desreferenciar el puntero DACL. Este parche convierte dacloffset a unsigned int y utiliza check_add_overflow() para validar el acceso a la DACL."}], "lastModified": "2025-11-14T16:51:45.377", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1FDF0290-DECC-4633-9F68-856CD6ABA9A5", "versionEndExcluding": "6.12.23", "versionStartIncluding": "5.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E7E864B0-8C00-4679-BA55-659B4C9C3AD3", "versionEndExcluding": "6.13.11", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FADAE5D8-4808-442C-B218-77B2CE8780A0", "versionEndExcluding": "6.14.2", "versionStartIncluding": "6.14"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}