CVE-2024-45010

{"id": "CVE-2024-45010", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2024-09-11T16:15:06.483", "references": [{"url": "https://git.kernel.org/stable/c/322ea3778965da72862cca2a0c50253aacf65fe6", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/43cf912b0b0fc7b4fd12cbc735d1f5afb8e1322d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7fdc870d08960961408a44c569f20f50940e7d4f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9849cfc67383ceb167155186f8f8fe8a896b60b3", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: pm: only mark 'subflow' endp as available\n\nAdding the following warning ...\n\n WARN_ON_ONCE(msk->pm.local_addr_used == 0)\n\n... before decrementing the local_addr_used counter helped to find a bug\nwhen running the \"remove single address\" subtest from the mptcp_join.sh\nselftests.\n\nRemoving a 'signal' endpoint will trigger the removal of all subflows\nlinked to this endpoint via mptcp_pm_nl_rm_addr_or_subflow() with\nrm_type == MPTCP_MIB_RMSUBFLOW. This will decrement the local_addr_used\ncounter, which is wrong in this case because this counter is linked to\n'subflow' endpoints, and here it is a 'signal' endpoint that is being\nremoved.\n\nNow, the counter is decremented, only if the ID is being used outside\nof mptcp_pm_nl_rm_addr_or_subflow(), only for 'subflow' endpoints, and\nif the ID is not 0 -- local_addr_used is not taking into account these\nones. This marking of the ID as being available, and the decrement is\ndone no matter if a subflow using this ID is currently available,\nbecause the subflow could have been closed before."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mptcp: pm: solo marcar el extremo 'subflow' como disponible Agregar la siguiente advertencia ... WARN_ON_ONCE(msk->pm.local_addr_used == 0) ... antes de decrementar el contador local_addr_used ayud\u00f3 a encontrar un error al ejecutar la subprueba \"eliminar una sola direcci\u00f3n\" de las autopruebas mptcp_join.sh. Eliminar un extremo 'se\u00f1al' activar\u00e1 la eliminaci\u00f3n de todos los subflujos vinculados a este extremo a trav\u00e9s de mptcp_pm_nl_rm_addr_or_subflow() con rm_type == MPTCP_MIB_RMSUBFLOW. Esto decrementar\u00e1 el contador local_addr_used, lo cual es incorrecto en este caso porque este contador est\u00e1 vinculado a extremos 'subflow', y aqu\u00ed es un extremo 'se\u00f1al' el que se est\u00e1 eliminando. Ahora, el contador se reduce solo si el ID se usa fuera de mptcp_pm_nl_rm_addr_or_subflow(), solo para los puntos finales de 'subflujo' y, si el ID no es 0, local_addr_used no los tiene en cuenta. Esto marca el ID como disponible y la reducci\u00f3n se realiza sin importar si un subflujo que usa este ID est\u00e1 disponible actualmente, porque el subflujo podr\u00eda haberse cerrado antes."}], "lastModified": "2024-09-13T16:35:05.843", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7CC97606-2676-4D1C-8544-CE4E3498BE40", "versionEndExcluding": "6.1.108", "versionStartIncluding": "5.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9DE9201A-CE6B-4726-BABB-8265EA0F8AE4", "versionEndExcluding": "6.6.48", "versionStartIncluding": "6.2"}, {"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"}