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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI/MSI: Fix UAF in msi_capability_init\n\nKFENCE reports the following UAF:\n\n BUG: KFENCE: use-after-free read in __pci_enable_msi_range+0x2c0/0x488\n\n Use-after-free read at 0x0000000024629571 (in kfence-#12):\n  __pci_enable_msi_range+0x2c0/0x488\n  pci_alloc_irq_vectors_affinity+0xec/0x14c\n  pci_alloc_irq_vectors+0x18/0x28\n\n kfence-#12: 0x0000000008614900-0x00000000e06c228d, size=104, cache=kmalloc-128\n\n allocated by task 81 on cpu 7 at 10.808142s:\n  __kmem_cache_alloc_node+0x1f0/0x2bc\n  kmalloc_trace+0x44/0x138\n  msi_alloc_desc+0x3c/0x9c\n  msi_domain_insert_msi_desc+0x30/0x78\n  msi_setup_msi_desc+0x13c/0x184\n  __pci_enable_msi_range+0x258/0x488\n  pci_alloc_irq_vectors_affinity+0xec/0x14c\n  pci_alloc_irq_vectors+0x18/0x28\n\n freed by task 81 on cpu 7 at 10.811436s:\n  msi_domain_free_descs+0xd4/0x10c\n  msi_domain_free_locked.part.0+0xc0/0x1d8\n  msi_domain_alloc_irqs_all_locked+0xb4/0xbc\n  pci_msi_setup_msi_irqs+0x30/0x4c\n  __pci_enable_msi_range+0x2a8/0x488\n  pci_alloc_irq_vectors_affinity+0xec/0x14c\n  pci_alloc_irq_vectors+0x18/0x28\n\nDescriptor allocation done in:\n__pci_enable_msi_range\n    msi_capability_init\n        msi_setup_msi_desc\n            msi_insert_msi_desc\n                msi_domain_insert_msi_desc\n                    msi_alloc_desc\n                        ...\n\nFreed in case of failure in __msi_domain_alloc_locked()\n__pci_enable_msi_range\n    msi_capability_init\n        pci_msi_setup_msi_irqs\n            msi_domain_alloc_irqs_all_locked\n                msi_domain_alloc_locked\n                    __msi_domain_alloc_locked =\u003e fails\n                    msi_domain_free_locked\n                        ...\n\nThat failure propagates back to pci_msi_setup_msi_irqs() in\nmsi_capability_init() which accesses the descriptor for unmasking in the\nerror exit path.\n\nCure it by copying the descriptor and using the copy for the error exit path\nunmask operation.\n\n[ tglx: Massaged change log ]"
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    "datePublished": "2024-07-29T15:48:09.247Z",
    "dateReserved": "2024-07-12T12:17:45.637Z",
    "dateUpdated": "2026-05-11T20:26:08.000Z",
    "state": "PUBLISHED"
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Liberado en caso de fallo en __msi_domain_alloc_locked() __pci_enable_msi_range msi_capability_init pci_msi_setup_msi_irqs msi_domain_alloc_irqs_all_locked msi_domain_alloc_locked __msi_ domain_alloc_locked =\u0026gt; falla msi_domain_free_locked... Ese error se propaga nuevamente a pci_msi_setup_msi_irqs() en msi_capability_init() que accede al descriptor para desenmascarar en la salida de error camino. Sor\u00e9guelo copiando el descriptor y usando la copia para la operaci\u00f3n de desenmascarar la ruta de salida del error. 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\"9eee5330656bf92f51cb1f09b2dc9f8cf975b3d1\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/pci/msi/msi.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.17\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.17\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.1.109\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.37\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9.8\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.9.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/pci/msi/msi.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/0ae40b2d0a5de6b045504098e365d4fdff5bbeba\"}, {\"url\": \"https://git.kernel.org/stable/c/ff1121d2214b794dc1772081f27bdd90721a84bc\"}, {\"url\": \"https://git.kernel.org/stable/c/45fc8d20e0768ab0a0ad054081d0f68aa3c83976\"}, {\"url\": \"https://git.kernel.org/stable/c/9eee5330656bf92f51cb1f09b2dc9f8cf975b3d1\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nPCI/MSI: Fix UAF in msi_capability_init\\n\\nKFENCE reports the following UAF:\\n\\n BUG: KFENCE: use-after-free read in __pci_enable_msi_range+0x2c0/0x488\\n\\n Use-after-free read at 0x0000000024629571 (in kfence-#12):\\n  __pci_enable_msi_range+0x2c0/0x488\\n  pci_alloc_irq_vectors_affinity+0xec/0x14c\\n  pci_alloc_irq_vectors+0x18/0x28\\n\\n kfence-#12: 0x0000000008614900-0x00000000e06c228d, size=104, cache=kmalloc-128\\n\\n allocated by task 81 on cpu 7 at 10.808142s:\\n  __kmem_cache_alloc_node+0x1f0/0x2bc\\n  kmalloc_trace+0x44/0x138\\n  msi_alloc_desc+0x3c/0x9c\\n  msi_domain_insert_msi_desc+0x30/0x78\\n  msi_setup_msi_desc+0x13c/0x184\\n  __pci_enable_msi_range+0x258/0x488\\n  pci_alloc_irq_vectors_affinity+0xec/0x14c\\n  pci_alloc_irq_vectors+0x18/0x28\\n\\n freed by task 81 on cpu 7 at 10.811436s:\\n  msi_domain_free_descs+0xd4/0x10c\\n  msi_domain_free_locked.part.0+0xc0/0x1d8\\n  msi_domain_alloc_irqs_all_locked+0xb4/0xbc\\n  pci_msi_setup_msi_irqs+0x30/0x4c\\n  __pci_enable_msi_range+0x2a8/0x488\\n  pci_alloc_irq_vectors_affinity+0xec/0x14c\\n  pci_alloc_irq_vectors+0x18/0x28\\n\\nDescriptor allocation done in:\\n__pci_enable_msi_range\\n    msi_capability_init\\n        msi_setup_msi_desc\\n            msi_insert_msi_desc\\n                msi_domain_insert_msi_desc\\n                    msi_alloc_desc\\n                        ...\\n\\nFreed in case of failure in __msi_domain_alloc_locked()\\n__pci_enable_msi_range\\n    msi_capability_init\\n        pci_msi_setup_msi_irqs\\n            msi_domain_alloc_irqs_all_locked\\n                msi_domain_alloc_locked\\n                    __msi_domain_alloc_locked =\u003e fails\\n                    msi_domain_free_locked\\n                        ...\\n\\nThat failure propagates back to pci_msi_setup_msi_irqs() in\\nmsi_capability_init() which accesses the descriptor for unmasking in the\\nerror exit path.\\n\\nCure it by copying the descriptor and using the copy for the error exit path\\nunmask operation.\\n\\n[ tglx: Massaged change log ]\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T09:11:56.250Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-41096\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T09:11:56.250Z\", \"dateReserved\": \"2024-07-12T12:17:45.637Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-07-29T15:48:09.247Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}