CVE-2024-42282

{"id": "CVE-2024-42282", "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": "2024-08-17T09:15:09.090", "references": [{"url": "https://git.kernel.org/stable/c/16f3a28cf5f876a7f3550d8f4c870a7b41bcfaef", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/af6bd5c9901b13a26eaf4d57d97a813297791596", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mediatek: Fix potential NULL pointer dereference in dummy net_device handling\n\nMove the freeing of the dummy net_device from mtk_free_dev() to\nmtk_remove().\n\nPreviously, if alloc_netdev_dummy() failed in mtk_probe(),\neth->dummy_dev would be NULL. The error path would then call\nmtk_free_dev(), which in turn called free_netdev() assuming dummy_dev\nwas allocated (but it was not), potentially causing a NULL pointer\ndereference.\n\nBy moving free_netdev() to mtk_remove(), we ensure it's only called when\nmtk_probe() has succeeded and dummy_dev is fully allocated. This\naddresses a potential NULL pointer dereference detected by Smatch[1]."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: mediatek: corrige la posible desreferencia del puntero NULL en el manejo del net_device ficticio. Mueva la liberaci\u00f3n del net_device ficticio de mtk_free_dev() a mtk_remove(). Anteriormente, si alloc_netdev_dummy() fallaba en mtk_probe(), eth->dummy_dev ser\u00eda NULL. La ruta de error luego llamar\u00eda a mtk_free_dev(), que a su vez llamar\u00eda a free_netdev() suponiendo que dummy_dev estuviera asignado (pero no lo estaba), causando potencialmente una desreferencia del puntero NULL. Al mover free_netdev() a mtk_remove(), nos aseguramos de que solo se llame cuando mtk_probe() haya tenido \u00e9xito y dummy_dev est\u00e9 completamente asignado. Esto soluciona una posible desreferencia de puntero NULL detectada por Smatch[1]."}], "lastModified": "2024-08-19T19:53:45.483", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "21DC7A88-E88C-4C44-9AFB-CBB30134097C", "versionEndExcluding": "6.10.3", "versionStartIncluding": "6.10"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}