{"id":"CVE-2026-89506","revision":"7c72b6db677b45c1a1cb8cbdcdfd02ec","records":[{"revision":"7c72b6db677b45c1a1cb8cbdcdfd02ec","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89506","aliases":[],"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":0,"publishedAt":"2026-09-11T19:43:53.35+00:00","modifiedAt":"2026-10-19T08:47:57.692+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/infiniband/core/uverbs_std_types_mr.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5b2e45049dc06a876bc6b138218ddeb0814502ef\",\n                            \"lessThan\": \"71d5c41ac583df09a7c32199bef7d42de7267d07\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5b2e45049dc06a876bc6b138218ddeb0814502ef\",\n                            \"lessThan\": \"9e71d0f4944ba5641e01db29b3256c963656d671\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5b2e45049dc06a876bc6b138218ddeb0814502ef\",\n                            \"lessThan\": \"011199f46f44a9fd93a9e5ab5d7fd1328d80e9bf\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/infiniband/core/uverbs_std_types_mr.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.17\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.17\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.50\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/71d5c41ac583df09a7c32199bef7d42de7267d07","https://git.kernel.org/stable/c/9e71d0f4944ba5641e01db29b3256c963656d671","https://git.kernel.org/stable/c/011199f46f44a9fd93a9e5ab5d7fd1328d80e9bf"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89506","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89506","identifiers":["CVE-2026-89506"]},"retained":false,"historicalAffected":[]}],"coverage":[]}