{"id":"CVE-2026-97421","revision":"c4b5e5652e4046c69c1914c2d3ec326e","records":[{"revision":"c4b5e5652e4046c69c1914c2d3ec326e","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-97421","aliases":[],"title":"RDMA/umem: Be careful about boundary conditions in ib_umem_find_best_pgsz()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/umem: Be careful about boundary conditions in ib_umem_find_best_pgsz()\n\nSeveral corner cases, especially important on 32 bits:\n\n- umem->iova is u64, the function argument should pass in u64 or\n  iova will be truncated\n- Check that the length is not too large for the iova\n- Check that lengths > 4G don't overflow the GENMASK","state":0,"publishedAt":"2026-09-24T16:03:31.505+00:00","modifiedAt":"2026-10-03T10:58:13.282+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/umem.c\",\n                        \"include/rdma/ib_umem.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"a40c20dabdf9045270767c75918feb67f0727c89\",\n                            \"lessThan\": \"3014da7587ce006cd08004fd6b257626b314e0a3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a40c20dabdf9045270767c75918feb67f0727c89\",\n                            \"lessThan\": \"ddccf6cc3861de2fe60986933bead79220e0d797\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a40c20dabdf9045270767c75918feb67f0727c89\",\n                            \"lessThan\": \"e9bbb5f5349ef560ff6f0395564f04c3aa664559\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a40c20dabdf9045270767c75918feb67f0727c89\",\n                            \"lessThan\": \"ae3cf7d2c4d506c5c91746321644e1a08d989e2a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a40c20dabdf9045270767c75918feb67f0727c89\",\n                            \"lessThan\": \"5fc5b73109540809b094710fac44da81dd8a3ff8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a40c20dabdf9045270767c75918feb67f0727c89\",\n                            \"lessThan\": \"09ea6837a0434fb4db99528a5055b6d822135dcf\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"85e40ba1c4a5246b35e91c2ed69d4680426904d7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"59f07434b297e2268f5d5c567db5b09145245cf1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"488229b7729d7becf4c39c5e74fb709fb35115c2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5.4.73\",\n                            \"lessThan\": \"5.5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.8.17\",\n                            \"lessThan\": \"5.9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.9.2\",\n                            \"lessThan\": \"5.10\",\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/core/umem.c\",\n                        \"include/rdma/ib_umem.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.10\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.10\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.222\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.189\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.158\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.111\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.53\",\n                            \"lessThanOrEqual\": \"6.18.*\",\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/3014da7587ce006cd08004fd6b257626b314e0a3","https://git.kernel.org/stable/c/ddccf6cc3861de2fe60986933bead79220e0d797","https://git.kernel.org/stable/c/e9bbb5f5349ef560ff6f0395564f04c3aa664559","https://git.kernel.org/stable/c/ae3cf7d2c4d506c5c91746321644e1a08d989e2a","https://git.kernel.org/stable/c/5fc5b73109540809b094710fac44da81dd8a3ff8","https://git.kernel.org/stable/c/09ea6837a0434fb4db99528a5055b6d822135dcf"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-97421","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-97421","identifiers":["CVE-2026-97421"]},"retained":false,"historicalAffected":[]}],"coverage":[]}