CVE-2023-4206

{"id": "CVE-2023-4206", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}, {"type": "Secondary", "source": "cve-coordination@google.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2023-09-06T14:15:11.280", "references": [{"url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b80b829e9e2c1b3f7aae34855e04d8f6ecaf13c8", "tags": ["Issue Tracking", "Mailing List", "Patch", "Vendor Advisory"], "source": "cve-coordination@google.com"}, {"url": "https://kernel.dance/b80b829e9e2c1b3f7aae34855e04d8f6ecaf13c8", "tags": ["Patch", "Vendor Advisory"], "source": "cve-coordination@google.com"}, {"url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "cve-coordination@google.com"}, {"url": "https://www.debian.org/security/2023/dsa-5492", "tags": ["Third Party Advisory"], "source": "cve-coordination@google.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}, {"type": "Secondary", "source": "cve-coordination@google.com", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "A use-after-free vulnerability in the Linux kernel's net/sched: cls_route component can be exploited to achieve local privilege escalation.\n\nWhen route4_change() is called on an existing filter, the whole tcf_result struct is always copied into the new instance of the filter. This causes a problem when updating a filter bound to a class, as tcf_unbind_filter() is always called on the old instance in the success path, decreasing filter_cnt of the still referenced class and allowing it to be deleted, leading to a use-after-free.\n\nWe recommend upgrading past commit b80b829e9e2c1b3f7aae34855e04d8f6ecaf13c8.\n\n"}, {"lang": "es", "value": "Una vulnerabilidad de use-after-free en el componente net/sched: cls_route del kernel de Linux se puede explotar para lograr una escalada de privilegios local. Cuando se llama a route4_change() en un filtro existente, toda la estructura tcf_result siempre se copia en la nueva instancia del filtro. Esto causa un problema al actualizar un filtro vinculado a una clase, ya que siempre se llama a tcf_unbind_filter() en la instancia anterior en la ruta exitosa, lo que disminuye filter_cnt de la clase a la que todav\u00eda se hace referencia y permite que se elimine, lo que lleva a un use-after-free. Recomendamos actualizar al commit anterior b80b829e9e2c1b3f7aae34855e04d8f6ecaf13c8."}], "lastModified": "2024-02-15T15:57:06.697", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1F7D3B5B-3896-4B9A-A0DF-07217A321EA9", "versionEndExcluding": "4.14.322", "versionStartIncluding": "3.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D2D2CA9F-4CC4-4AF5-8C6D-E58415AB782E", "versionEndExcluding": "4.19.291", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0707E9FF-8CDE-4AC1-98F3-5BB74EF88F8A", "versionEndExcluding": "5.4.253", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B8DECE4F-2D62-4976-B338-963015198AC8", "versionEndExcluding": "5.10.190", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C552AC9E-23B8-4D7D-AA26-57985BD93962", "versionEndExcluding": "5.15.126", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A0CA013D-55AF-4494-A931-AFC8EA64E875", "versionEndExcluding": "6.1.45", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7BB0D94C-4FCE-46F4-A8D4-062D6A84627A", "versionEndExcluding": "6.4.10", "versionStartIncluding": "6.2"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "46D69DCC-AE4D-4EA5-861C-D60951444C6C"}], "operator": "OR"}]}], "sourceIdentifier": "cve-coordination@google.com"}