{"id":"CVE-2026-74334","revision":"7d13163d46904ad08e0cc4cf8ebd9bb0","records":[{"revision":"7d13163d46904ad08e0cc4cf8ebd9bb0","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-74334","aliases":[],"title":"RDMA/nldev: Fix locking when accessing mr->pd","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/nldev: Fix locking when accessing mr->pd\n\nSashiko points out that, due to rereg_mr, the PD is actually variable and\nall the touches in nldev are racy.\n\nUse mr->device instead of mr->pd->device.\n\nGetting the PD restrack ID is more tricky. To avoid disturbing all the\nhappy paths, add an rdma_restrack_sync() operation which is sort of like\nflush_workqueue() or synchronize_irq(): after it returns, all the old\nnldev touches to the mr are gone and everything sees the new PD. This\nmakes it safe to reach into the PD pointer.","state":0,"publishedAt":"2026-08-15T05:58:26.455+00:00","modifiedAt":"2026-10-16T18:55:33.821+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/nldev.c\",\n                        \"drivers/infiniband/core/restrack.c\",\n                        \"drivers/infiniband/core/restrack.h\",\n                        \"drivers/infiniband/core/uverbs_cmd.c\",\n                        \"include/rdma/ib_verbs.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"da5c8507821573b8ed6e3f47e009f273493ffaf7\",\n                            \"lessThan\": \"845c6b355226195dad1f26b300c4830f57034e8b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"da5c8507821573b8ed6e3f47e009f273493ffaf7\",\n                            \"lessThan\": \"7a0cbb5721a1da81e902d73b6049f85ca8f3fc0a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"da5c8507821573b8ed6e3f47e009f273493ffaf7\",\n                            \"lessThan\": \"05e26f34597e9c38bb5b340d86b179b23673869f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"da5c8507821573b8ed6e3f47e009f273493ffaf7\",\n                            \"lessThan\": \"a07cba1296aaa81bf9b914486ca957aaff196247\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"da5c8507821573b8ed6e3f47e009f273493ffaf7\",\n                            \"lessThan\": \"1a132ee4e655288d9a0937ea5109a0d038431ae9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"da5c8507821573b8ed6e3f47e009f273493ffaf7\",\n                            \"lessThan\": \"50d5c02ab8e62325548bd3a6e6b758a9dcd6e7c3\",\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/nldev.c\",\n                        \"drivers/infiniband/core/restrack.c\",\n                        \"drivers/infiniband/core/restrack.h\",\n                        \"drivers/infiniband/core/uverbs_cmd.c\",\n                        \"include/rdma/ib_verbs.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.18\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.18\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.110\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.52\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.5\",\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/845c6b355226195dad1f26b300c4830f57034e8b","https://git.kernel.org/stable/c/7a0cbb5721a1da81e902d73b6049f85ca8f3fc0a","https://git.kernel.org/stable/c/05e26f34597e9c38bb5b340d86b179b23673869f","https://git.kernel.org/stable/c/a07cba1296aaa81bf9b914486ca957aaff196247","https://git.kernel.org/stable/c/1a132ee4e655288d9a0937ea5109a0d038431ae9","https://git.kernel.org/stable/c/50d5c02ab8e62325548bd3a6e6b758a9dcd6e7c3"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74334","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-74334","identifiers":["CVE-2026-74334"]},"retained":false,"historicalAffected":[]}],"coverage":[]}