CVE-2024-53113

{"id": "CVE-2024-53113", "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": "2024-12-02T14:15:12.097", "references": [{"url": "https://git.kernel.org/stable/c/31502374627ba9ec3e710dbd0bb00457cc6d2c19", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6addb2d9501ec866d7b3a3b4e665307c437e9be2", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/8ce41b0f9d77cca074df25afd39b86e2ee3aa68e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/903d896448c2e50e8652aaba529a30d4d1eaa0e5", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d0f16cec79774c3132df006cf771eddd89d08f58", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "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\nmm: fix NULL pointer dereference in alloc_pages_bulk_noprof\n\nWe triggered a NULL pointer dereference for ac.preferred_zoneref->zone in\nalloc_pages_bulk_noprof() when the task is migrated between cpusets.\n\nWhen cpuset is enabled, in prepare_alloc_pages(), ac->nodemask may be\n&current->mems_allowed. when first_zones_zonelist() is called to find\npreferred_zoneref, the ac->nodemask may be modified concurrently if the\ntask is migrated between different cpusets. Assuming we have 2 NUMA Node,\nwhen traversing Node1 in ac->zonelist, the nodemask is 2, and when\ntraversing Node2 in ac->zonelist, the nodemask is 1. As a result, the\nac->preferred_zoneref points to NULL zone.\n\nIn alloc_pages_bulk_noprof(), for_each_zone_zonelist_nodemask() finds a\nallowable zone and calls zonelist_node_idx(ac.preferred_zoneref), leading\nto NULL pointer dereference.\n\n__alloc_pages_noprof() fixes this issue by checking NULL pointer in commit\nea57485af8f4 (\"mm, page_alloc: fix check for NULL preferred_zone\") and\ncommit df76cee6bbeb (\"mm, page_alloc: remove redundant checks from alloc\nfastpath\").\n\nTo fix it, check NULL pointer for preferred_zoneref->zone."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mm: corregir la desreferencia de puntero NULL en alloc_pages_bulk_noprof Activamos una desreferencia de puntero NULL para ac.preferred_zoneref->zone en alloc_pages_bulk_noprof() cuando la tarea se migra entre conjuntos de CPU. Cuando se habilita el conjunto de CPU, en prepare_alloc_pages(), ac->nodemask puede ser &current->mems_allowed. Cuando se llama a first_zones_zonelist() para encontrar preference_zoneref, ac->nodemask puede modificarse simult\u00e1neamente si la tarea se migra entre diferentes conjuntos de CPU. Suponiendo que tenemos 2 nodos NUMA, al recorrer el nodo 1 en ac->zonelist, la m\u00e1scara de nodo es 2, y al recorrer el nodo 2 en ac->zonelist, la m\u00e1scara de nodo es 1. Como resultado, ac->preferred_zoneref apunta a la zona NULL. En alloc_pages_bulk_noprof(), for_each_zone_zonelist_nodemask() encuentra una zona permitida y llama a zonelist_node_idx(ac.preferred_zoneref), lo que genera una desreferencia del puntero NULL. __alloc_pages_noprof() corrige este problema al verificar el puntero NULL en el commit ea57485af8f4 (\"mm, page_alloc: corregir la verificaci\u00f3n para la zona preferida NULL\") y el commit df76cee6bbeb (\"mm, page_alloc: eliminar las verificaciones redundantes de la ruta r\u00e1pida de asignaci\u00f3n\"). Para solucionarlo, verifique el puntero NULL para la zona preferida->zone."}], "lastModified": "2024-12-14T21:15:35.550", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1DC3D09C-354A-4F4D-9A89-E62897E5187A", "versionEndExcluding": "6.1.119", "versionStartIncluding": "5.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8800BB45-48BC-4B52-BDA5-B1E4633F42E5", "versionEndExcluding": "6.6.63", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C256F46A-AFDD-4B99-AA4F-67D9D9D2C55A", "versionEndExcluding": "6.11.10", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7F361E1D-580F-4A2D-A509-7615F73167A1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "925478D0-3E3D-4E6F-ACD5-09F28D5DF82C"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3C95E234-D335-4B6C-96BF-E2CEBD8654ED"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E0F717D8-3014-4F84-8086-0124B2111379"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "24DBE6C7-2AAE-4818-AED2-E131F153D2FA"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "24B88717-53F5-42AA-9B72-14C707639E3F"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1EF8CD82-1EAE-4254-9545-F85AB94CF90F"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}