{"api_version":"1","generated_at":"2026-10-12T23:27:42+00:00","cve":"CVE-2026-90082","urls":{"html":"https://cve.report/CVE-2026-90082","api":"https://cve.report/api/cve/CVE-2026-90082.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-90082","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-90082"},"summary":{"title":"net: mana: Cap MSI-X vectors to the device MSI-X table size","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mana: Cap MSI-X vectors to the device MSI-X table size\n\nmana_gd_query_max_resources() sizes gc->num_msix_usable from resp.max_msix\nand the CPU count, but never from the device MSI-X table. On a 1792 vCPU\nM-series VM that yields 1793 while the table has 1024 entries, and\nmana_gd_setup_remaining_irqs() then walks indices 1..1792, running off the\nend of the region mapped by msix_map_region():\n\n  BUG: unable to handle page fault for address: ff8e347f8b99800c\n  RIP: 0010:msix_prepare_msi_desc+0x7a/0x90\n  RAX: 0000000000004000 RBX: ff4330cb164ea780 RCX: ff8e347f8b998000\n  Call Trace:\n   <TASK>\n   __msi_domain_alloc_irqs+0x13a/0x440\n   msi_domain_alloc_irq_at+0x149/0x1b0\n   mana_gd_setup+0x351/0x890\n   mana_gd_probe+0x274/0x390\n   </TASK>\n\nRAX is index 1024 * PCI_MSIX_ENTRY_SIZE, one entry past the table.\n\nmsi_insert_desc() does range check the index, but only against the MSI\ndomain hwsize, which matches the table only for devices on an MSI parent\ndomain. With a global PCI/MSI domain hwsize is MSI_XA_DOMAIN_SIZE, so\nnothing bounds the request.\n\nCap num_msix_usable with pci_msix_vec_count().","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:16:57","updated_at":"2026-09-17 17:16:57"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/2c7493f980140a5c40eb4f98f97c557193a2c330","name":"https://git.kernel.org/stable/c/2c7493f980140a5c40eb4f98f97c557193a2c330","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4f9827b314ee57cd99f86f8dbadcaf567112e2b2","name":"https://git.kernel.org/stable/c/4f9827b314ee57cd99f86f8dbadcaf567112e2b2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90082","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90082","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 755391121038c06cb653241aa94dcabd87179f62 4f9827b314ee57cd99f86f8dbadcaf567112e2b2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 755391121038c06cb653241aa94dcabd87179f62 2c7493f980140a5c40eb4f98f97c557193a2c330 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.17","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.17 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/ethernet/microsoft/mana/gdma_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"4f9827b314ee57cd99f86f8dbadcaf567112e2b2","status":"affected","version":"755391121038c06cb653241aa94dcabd87179f62","versionType":"git"},{"lessThan":"2c7493f980140a5c40eb4f98f97c557193a2c330","status":"affected","version":"755391121038c06cb653241aa94dcabd87179f62","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/ethernet/microsoft/mana/gdma_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.17"},{"lessThan":"6.17","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"6.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.17","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mana: Cap MSI-X vectors to the device MSI-X table size\n\nmana_gd_query_max_resources() sizes gc->num_msix_usable from resp.max_msix\nand the CPU count, but never from the device MSI-X table. On a 1792 vCPU\nM-series VM that yields 1793 while the table has 1024 entries, and\nmana_gd_setup_remaining_irqs() then walks indices 1..1792, running off the\nend of the region mapped by msix_map_region():\n\n  BUG: unable to handle page fault for address: ff8e347f8b99800c\n  RIP: 0010:msix_prepare_msi_desc+0x7a/0x90\n  RAX: 0000000000004000 RBX: ff4330cb164ea780 RCX: ff8e347f8b998000\n  Call Trace:\n   <TASK>\n   __msi_domain_alloc_irqs+0x13a/0x440\n   msi_domain_alloc_irq_at+0x149/0x1b0\n   mana_gd_setup+0x351/0x890\n   mana_gd_probe+0x274/0x390\n   </TASK>\n\nRAX is index 1024 * PCI_MSIX_ENTRY_SIZE, one entry past the table.\n\nmsi_insert_desc() does range check the index, but only against the MSI\ndomain hwsize, which matches the table only for devices on an MSI parent\ndomain. With a global PCI/MSI domain hwsize is MSI_XA_DOMAIN_SIZE, so\nnothing bounds the request.\n\nCap num_msix_usable with pci_msix_vec_count()."}],"providerMetadata":{"dateUpdated":"2026-09-17T16:05:59.532Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/4f9827b314ee57cd99f86f8dbadcaf567112e2b2"},{"url":"https://git.kernel.org/stable/c/2c7493f980140a5c40eb4f98f97c557193a2c330"}],"title":"net: mana: Cap MSI-X vectors to the device MSI-X table size","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-90082","datePublished":"2026-09-17T16:05:59.532Z","dateReserved":"2026-09-11T19:38:34.785Z","dateUpdated":"2026-09-17T16:05:59.532Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:16:57","lastModifiedDate":"2026-09-17 17:16:57","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"90082","Ordinal":"1","Title":"net: mana: Cap MSI-X vectors to the device MSI-X table size","CVE":"CVE-2026-90082","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"90082","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mana: Cap MSI-X vectors to the device MSI-X table size\n\nmana_gd_query_max_resources() sizes gc->num_msix_usable from resp.max_msix\nand the CPU count, but never from the device MSI-X table. On a 1792 vCPU\nM-series VM that yields 1793 while the table has 1024 entries, and\nmana_gd_setup_remaining_irqs() then walks indices 1..1792, running off the\nend of the region mapped by msix_map_region():\n\n  BUG: unable to handle page fault for address: ff8e347f8b99800c\n  RIP: 0010:msix_prepare_msi_desc+0x7a/0x90\n  RAX: 0000000000004000 RBX: ff4330cb164ea780 RCX: ff8e347f8b998000\n  Call Trace:\n   <TASK>\n   __msi_domain_alloc_irqs+0x13a/0x440\n   msi_domain_alloc_irq_at+0x149/0x1b0\n   mana_gd_setup+0x351/0x890\n   mana_gd_probe+0x274/0x390\n   </TASK>\n\nRAX is index 1024 * PCI_MSIX_ENTRY_SIZE, one entry past the table.\n\nmsi_insert_desc() does range check the index, but only against the MSI\ndomain hwsize, which matches the table only for devices on an MSI parent\ndomain. With a global PCI/MSI domain hwsize is MSI_XA_DOMAIN_SIZE, so\nnothing bounds the request.\n\nCap num_msix_usable with pci_msix_vec_count().","Type":"Description","Title":"net: mana: Cap MSI-X vectors to the device MSI-X table size"}]}}}