CVE-2024-44974

{"id": "CVE-2024-44974", "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}]}, "published": "2024-09-04T20:15:07.100", "references": [{"url": "https://git.kernel.org/stable/c/0201d65d9806d287a00e0ba96f0321835631f63f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/2b4f46f9503633dade75cb796dd1949d0e6581a1", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/48e50dcbcbaaf713d82bf2da5c16aeced94ad07d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9a9afbbc3fbfca4975eea4aa5b18556db5a0c0b8", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ddee5b4b6a1cc03c1e9921cf34382e094c2009f1", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/f2c865e9e3ca44fc06b5f73b29a954775e4dbb38", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: pm: avoid possible UaF when selecting endp\n\nselect_local_address() and select_signal_address() both select an\nendpoint entry from the list inside an RCU protected section, but return\na reference to it, to be read later on. If the entry is dereferenced\nafter the RCU unlock, reading info could cause a Use-after-Free.\n\nA simple solution is to copy the required info while inside the RCU\nprotected section to avoid any risk of UaF later. The address ID might\nneed to be modified later to handle the ID0 case later, so a copy seems\nOK to deal with."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mptcp: pm: evitar posible UaF al seleccionar endp select_local_address() y select_signal_address() seleccionan una entrada de endpoint de la lista dentro de una secci\u00f3n protegida de RCU, pero devuelven una referencia a ella, para leerla m\u00e1s tarde. Si se desreferencia la entrada despu\u00e9s del desbloqueo de RCU, leer informaci\u00f3n podr\u00eda causar un Use-after-Free. Una soluci\u00f3n simple es copiar la informaci\u00f3n requerida mientras se est\u00e1 dentro de la secci\u00f3n protegida de RCU para evitar cualquier riesgo de UaF m\u00e1s adelante. Es posible que el ID de la direcci\u00f3n deba modificarse m\u00e1s tarde para manejar el caso ID0 m\u00e1s tarde, por lo que una copia parece ser una buena opci\u00f3n."}], "lastModified": "2024-09-12T12:15:51.397", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3C120709-9CC8-4B99-81CC-CA805D1EABD5", "versionEndExcluding": "6.6.48", "versionStartIncluding": "5.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D2AFDFD1-D95A-4EB7-843B-5E7659518B67", "versionEndExcluding": "6.10.7", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8B3CE743-2126-47A3-8B7C-822B502CF119"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4DEB27E7-30AA-45CC-8934-B89263EF3551"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E0005AEF-856E-47EB-BFE4-90C46899394D"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.11:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "39889A68-6D34-47A6-82FC-CD0BF23D6754"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}