CVE-2022-48874

{"id": "CVE-2022-48874", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "[email protected]", "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": "2024-08-21T07:15:04.383", "references": [{"url": "https://git.kernel.org/stable/c/9446fa1683a7e3937d9970248ced427c1983a1c5", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a50c5c25b6e7d2824698c0e6385f882a18f4a498", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "[email protected]", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: fastrpc: Fix use-after-free and race in fastrpc_map_find\n\nCurrently, there is a race window between the point when the mutex is\nunlocked in fastrpc_map_lookup and the reference count increasing\n(fastrpc_map_get) in fastrpc_map_find, which can also lead to\nuse-after-free.\n\nSo lets merge fastrpc_map_find into fastrpc_map_lookup which allows us\nto both protect the maps list by also taking the &fl->lock spinlock and\nthe reference count, since the spinlock will be released only after.\nAdd take_ref argument to make this suitable for all callers."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: misc: fastrpc: corrige use-after-free y ejecuci\u00f3n en fastrpc_map_find Actualmente, hay una ventana de ejecuci\u00f3n entre el punto en el que se desbloquea el mutex en fastrpc_map_lookup y el recuento de referencias aumenta (fastrpc_map_get ) en fastrpc_map_find, lo que tambi\u00e9n puede generar use-after-free. Entonces, fusionemos fastrpc_map_find con fastrpc_map_lookup, lo que nos permite proteger la lista de mapas tomando tambi\u00e9n el &fl->lock spinlock y el recuento de referencias, ya que el spinlock se liberar\u00e1 solo despu\u00e9s. Agregue el argumento take_ref para que sea adecuado para todas las personas que llaman."}], "lastModified": "2024-08-29T02:42:02.070", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "322A7D37-5D31-4288-87E6-2947F4E61BE1", "versionEndExcluding": "6.1.8", "versionStartIncluding": "5.18"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}