CVE-2022-48887

{"id": "CVE-2022-48887", "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": "2024-08-21T07:15:05.143", "references": [{"url": "https://git.kernel.org/stable/c/7ac9578e45b20e3f3c0c8eb71f5417a499a7226a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a309c7194e8a2f8bd4539b9449917913f6c2cd50", "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\ndrm/vmwgfx: Remove rcu locks from user resources\n\nUser resource lookups used rcu to avoid two extra atomics. Unfortunately\nthe rcu paths were buggy and it was easy to make the driver crash by\nsubmitting command buffers from two different threads. Because the\nlookups never show up in performance profiles replace them with a\nregular spin lock which fixes the races in accesses to those shared\nresources.\n\nFixes kernel oops'es in IGT's vmwgfx execution_buffer stress test and\nseen crashes with apps using shared resources."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: drm/vmwgfx: elimina los bloqueos de rcu de los recursos del usuario. Las b\u00fasquedas de recursos del usuario utilizaron rcu para evitar dos \u00e1tomos adicionales. Desafortunadamente, las rutas de rcu ten\u00edan errores y era f\u00e1cil hacer que el controlador fallara al enviar b\u00faferes de comando desde dos subprocesos diferentes. Debido a que las b\u00fasquedas nunca aparecen en los perfiles de rendimiento, reempl\u00e1celas con un bloqueo de giro normal que corrige las ejecuciones en los accesos a esos recursos compartidos. Corrige los fallos del kernel en la prueba de esfuerzo vmwgfxexecution_b\u00fafer de IGT y los fallos observados en las aplicaciones que utilizan recursos compartidos."}], "lastModified": "2024-09-06T14:55:46.460", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2D63FB2D-B092-4364-B732-F4FD54A43619", "versionEndExcluding": "6.1.7", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FF501633-2F44-4913-A8EE-B021929F49F6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2BDA597B-CAC1-4DF0-86F0-42E142C654E9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "725C78C9-12CE-406F-ABE8-0813A01D66E8"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}