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Lo que queremos es verificar que clone no exponga algo oculto por un montaje que no podamos deshacer. \"No se puede deshacer\" puede ser el resultado de MNT_LOCKED en un hijo, pero tambi\u00e9n puede provenir de la falta de derechos de administrador en los usuarios del espacio de nombres al que pertenece el montaje. clone_private_mnt() comprueba lo primero, pero no lo segundo. Hay varias comprobaciones de CAP_SYS_ADMIN bastante confusas en varios usuarios durante el montaje, especialmente con la nueva API de montaje; tienen diferentes prop\u00f3sitos y, en el caso de clone_private_mnt(), generalmente, aunque no siempre, cubren la comprobaci\u00f3n faltante mencionada anteriormente."}], "id": "CVE-2025-38499", "lastModified": "2026-01-07T16:26:47.710", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-08-11T16:15:30.057", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/36fecd740de2d542d2091d65d36554ee2bcf9c65"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/38628ae06e2a37770cd794802a3f1310cf9846e3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c28f922c9dcee0e4876a2c095939d77fe7e15116"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d717325b5ecf2a40daca85c61923e17f32306179"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/dc6a664089f10eab0fb36b6e4f705022210191d2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e77078e52fbf018ab986efb3c79065ab35025607"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: clone_private_mnt(): make sure that caller has CAP_SYS_ADMIN in the right userns", "id": "2387670", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2387670"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2025-38499", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-08-11T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-38499\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-38499\nhttps://lore.kernel.org/linux-cve-announce/2025081112-CVE-2025-38499-4572@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-08-12T07:41:42.380778+00:00", "updated": "2025-08-12T07:41:42.380851+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}