CVE-2024-44955

{"id": "CVE-2024-44955", "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": "2024-09-04T19:15:30.423", "references": [{"url": "https://git.kernel.org/stable/c/39b217193729aa45eded8de24d9245468a0c0263", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/fcf6a49d79923a234844b8efe830a61f3f0584e4", "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\ndrm/amd/display: Don't refer to dc_sink in is_dsc_need_re_compute\n\n[Why]\nWhen unplug one of monitors connected after mst hub, encounter null pointer dereference.\n\nIt's due to dc_sink get released immediately in early_unregister() or detect_ctx(). When\ncommit new state which directly referring to info stored in dc_sink will cause null pointer\ndereference.\n\n[how]\nRemove redundant checking condition. Relevant condition should already be covered by checking\nif dsc_aux is null or not. Also reset dsc_aux to NULL when the connector is disconnected."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/amd/display: No hacer referencia a dc_sink en is_dsc_need_re_compute [Por qu\u00e9] Cuando se desconecta uno de los monitores conectados despu\u00e9s del concentrador mst, se produce una desreferencia de puntero nulo. Esto se debe a que dc_sink se libera inmediatamente en early_unregister() o detect_ctx(). Cuando se confirma un nuevo estado que hace referencia directa a la informaci\u00f3n almacenada en dc_sink, se producir\u00e1 una desreferencia de puntero nulo. [C\u00f3mo] Eliminar la condici\u00f3n de comprobaci\u00f3n redundante. La condici\u00f3n relevante ya deber\u00eda estar cubierta comprobando si dsc_aux es nulo o no. Tambi\u00e9n se restablece dsc_aux a NULL cuando se desconecta el conector."}], "lastModified": "2024-10-10T17:57:00.267", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E4CB0927-C720-465B-99F2-3E47215515F2", "versionEndExcluding": "6.10.5"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}