CVE-2026-90082

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-90082", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.785Z", "datePublished": "2026-09-17T16:05:59.532Z", "dateUpdated": "2026-10-19T08:57:38.727Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:57:38.727Z"}, "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()."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/microsoft/mana/gdma_main.c"], "versions": [{"version": "755391121038c06cb653241aa94dcabd87179f62", "lessThan": "7b3e08eea1e8cae37e84540c5cb4aee4887e46ac", "status": "affected", "versionType": "git"}, {"version": "755391121038c06cb653241aa94dcabd87179f62", "lessThan": "4f9827b314ee57cd99f86f8dbadcaf567112e2b2", "status": "affected", "versionType": "git"}, {"version": "755391121038c06cb653241aa94dcabd87179f62", "lessThan": "2c7493f980140a5c40eb4f98f97c557193a2c330", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/microsoft/mana/gdma_main.c"], "versions": [{"version": "6.17", "status": "affected"}, {"version": "0", "lessThan": "6.17", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.57", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "6.18.57"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/7b3e08eea1e8cae37e84540c5cb4aee4887e46ac"}, {"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"}}}}

{}

{"affected": [{"affectedData": [{"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": "7b3e08eea1e8cae37e84540c5cb4aee4887e46ac", "status": "affected", "version": "755391121038c06cb653241aa94dcabd87179f62", "versionType": "git"}, {"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": "6.18.*", "status": "unaffected", "version": "6.18.57", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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()."}], "id": "CVE-2026-90082", "lastModified": "2026-10-19T09:18:57.130", "metrics": {}, "published": "2026-09-17T17:16:57.573", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2c7493f980140a5c40eb4f98f97c557193a2c330"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4f9827b314ee57cd99f86f8dbadcaf567112e2b2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7b3e08eea1e8cae37e84540c5cb4aee4887e46ac"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[755391121038c06cb653241aa94dcabd87179f62,4f9827b314ee57cd99f86f8dbadcaf567112e2b2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[755391121038c06cb653241aa94dcabd87179f62,2c7493f980140a5c40eb4f98f97c557193a2c330)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.17"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.17)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.6,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-18T14:15:09.501075+00:00", "updated": "2026-09-20T04:30:18.058360+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-788", "CWE-119"]}