{"id":"CVE-2026-74334","revision":null,"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":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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Not a global EPSS backfill.","generation":"2026-11-09T09:04:02.9162191+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-09T09:04:02.9162191+00:00","lastSuccessAt":"2026-11-09T09:04:03.197028+00:00","error":null,"lastVerifiedAt":"2026-11-09T09:04:03.1970284+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. 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