{"id":"CVE-2026-68419","revision":"ad9afdeca4434e8d8ebca19907d7d8f6","records":[{"revision":"ad9afdeca4434e8d8ebca19907d7d8f6","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-68419","aliases":[],"title":"RDMA/irdma: Prevent rereg_mr for non-mem regions","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Prevent rereg_mr for non-mem regions\n\nWhen a QP/CQ/SRQ is created, a two step process is used\nwhere the buffer is allocated in userspace and explicitly\nregistered with the normal reg_mr mechanism prior to creating\nthe actual QP/CQ/SRQ object.\n\nThese special registrations are indicated via an ABI field\nso the driver knows that they do not have a valid mkey and\nto skip the actual CQP command submission.\n\nSince these are real MR objects from the core's perspective,\nit is possible for a user application to invoke rereg_mr on them\nand cause a real CQP op to be emitted with the zero-initialized\nmkey value of 0.\n\nFix this by preventing rereg_mr on these special regions.","state":0,"publishedAt":"2026-08-10T12:04:39.912+00:00","modifiedAt":"2026-10-19T21:09:09.507+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/hw/irdma/verbs.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"715fdb3b30541cc8180b7cdc6aa9f8c307afdf25\",\n                            \"lessThan\": \"fb46d134e1b8690bed2da9005b36d32d2efd34ac\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5ac388db27c443dadfbb0b8b23fa7ccf429d901a\",\n                            \"lessThan\": \"b5029e91c63406e4f4c8d58161048b41b6f0bd8c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5ac388db27c443dadfbb0b8b23fa7ccf429d901a\",\n                            \"lessThan\": \"ca1c29f05274b737dc964e28b97803750d7cf7ec\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5ac388db27c443dadfbb0b8b23fa7ccf429d901a\",\n                            \"lessThan\": \"dbaa37e060918c45517786e37ecab0f300b48fa9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5ac388db27c443dadfbb0b8b23fa7ccf429d901a\",\n                            \"lessThan\": \"a846aecb931b4d65d5eafa92a0623545af46d4f2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6.6.120\",\n                            \"lessThan\": \"6.6.148\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\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/hw/irdma/verbs.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.7\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.7\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.148\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.101\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.42\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.6\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/fb46d134e1b8690bed2da9005b36d32d2efd34ac","https://git.kernel.org/stable/c/b5029e91c63406e4f4c8d58161048b41b6f0bd8c","https://git.kernel.org/stable/c/ca1c29f05274b737dc964e28b97803750d7cf7ec","https://git.kernel.org/stable/c/dbaa37e060918c45517786e37ecab0f300b48fa9","https://git.kernel.org/stable/c/a846aecb931b4d65d5eafa92a0623545af46d4f2"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-68419","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-68419","identifiers":["CVE-2026-68419"]},"retained":false,"historicalAffected":[]}],"coverage":[]}