{"api_version":"1","generated_at":"2026-09-11T22:05:31+00:00","cve":"CVE-2026-89506","urls":{"html":"https://cve.report/CVE-2026-89506","api":"https://cve.report/api/cve/CVE-2026-89506.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-89506","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-89506"},"summary":{"title":"RDMA/uverbs: Add UVERBS_ATTR_UHW to UVERBS_METHOD_REG_MR","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/uverbs: Add UVERBS_ATTR_UHW to UVERBS_METHOD_REG_MR\n\nThe original commit missed that three drivers (mthca, irdma, siw) have UHW\ndata associated with reg_mr that cannot be passed through the ioctl. They\nalso assume that the udata cannot be NULL, so failing to pass a valid\nudata can trigger a NULL udata crash in those drivers.\n\nThis never happens in real systems since in rdma-core ibv_cmd_reg_mr_ex()\ndoes not accept a udata and those three drivers don't use it, however a\nmalicious userspace could trigger it.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-11 20:19:32","updated_at":"2026-09-11 20:19:32"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/71d5c41ac583df09a7c32199bef7d42de7267d07","name":"https://git.kernel.org/stable/c/71d5c41ac583df09a7c32199bef7d42de7267d07","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9e71d0f4944ba5641e01db29b3256c963656d671","name":"https://git.kernel.org/stable/c/9e71d0f4944ba5641e01db29b3256c963656d671","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/011199f46f44a9fd93a9e5ab5d7fd1328d80e9bf","name":"https://git.kernel.org/stable/c/011199f46f44a9fd93a9e5ab5d7fd1328d80e9bf","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89506","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89506","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5b2e45049dc06a876bc6b138218ddeb0814502ef 71d5c41ac583df09a7c32199bef7d42de7267d07 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5b2e45049dc06a876bc6b138218ddeb0814502ef 9e71d0f4944ba5641e01db29b3256c963656d671 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5b2e45049dc06a876bc6b138218ddeb0814502ef 011199f46f44a9fd93a9e5ab5d7fd1328d80e9bf 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 6.18.50 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.4 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/infiniband/core/uverbs_std_types_mr.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"71d5c41ac583df09a7c32199bef7d42de7267d07","status":"affected","version":"5b2e45049dc06a876bc6b138218ddeb0814502ef","versionType":"git"},{"lessThan":"9e71d0f4944ba5641e01db29b3256c963656d671","status":"affected","version":"5b2e45049dc06a876bc6b138218ddeb0814502ef","versionType":"git"},{"lessThan":"011199f46f44a9fd93a9e5ab5d7fd1328d80e9bf","status":"affected","version":"5b2e45049dc06a876bc6b138218ddeb0814502ef","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/infiniband/core/uverbs_std_types_mr.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":"6.18.50","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.4","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":"6.18.50","versionStartIncluding":"6.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.4","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\nRDMA/uverbs: Add UVERBS_ATTR_UHW to UVERBS_METHOD_REG_MR\n\nThe original commit missed that three drivers (mthca, irdma, siw) have UHW\ndata associated with reg_mr that cannot be passed through the ioctl. They\nalso assume that the udata cannot be NULL, so failing to pass a valid\nudata can trigger a NULL udata crash in those drivers.\n\nThis never happens in real systems since in rdma-core ibv_cmd_reg_mr_ex()\ndoes not accept a udata and those three drivers don't use it, however a\nmalicious userspace could trigger it."}],"providerMetadata":{"dateUpdated":"2026-09-11T19:43:53.350Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/71d5c41ac583df09a7c32199bef7d42de7267d07"},{"url":"https://git.kernel.org/stable/c/9e71d0f4944ba5641e01db29b3256c963656d671"},{"url":"https://git.kernel.org/stable/c/011199f46f44a9fd93a9e5ab5d7fd1328d80e9bf"}],"title":"RDMA/uverbs: Add UVERBS_ATTR_UHW to UVERBS_METHOD_REG_MR","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-89506","datePublished":"2026-09-11T19:43:53.350Z","dateReserved":"2026-09-11T19:38:34.716Z","dateUpdated":"2026-09-11T19:43:53.350Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-11 20:19:32","lastModifiedDate":"2026-09-11 20:19:32","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"89506","Ordinal":"1","Title":"RDMA/uverbs: Add UVERBS_ATTR_UHW to UVERBS_METHOD_REG_MR","CVE":"CVE-2026-89506","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"89506","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/uverbs: Add UVERBS_ATTR_UHW to UVERBS_METHOD_REG_MR\n\nThe original commit missed that three drivers (mthca, irdma, siw) have UHW\ndata associated with reg_mr that cannot be passed through the ioctl. They\nalso assume that the udata cannot be NULL, so failing to pass a valid\nudata can trigger a NULL udata crash in those drivers.\n\nThis never happens in real systems since in rdma-core ibv_cmd_reg_mr_ex()\ndoes not accept a udata and those three drivers don't use it, however a\nmalicious userspace could trigger it.","Type":"Description","Title":"RDMA/uverbs: Add UVERBS_ATTR_UHW to UVERBS_METHOD_REG_MR"}]}}}