{"id":"CVE-2026-74273","revision":"86af90143be24b088a22347f1ae323af","records":[{"revision":"86af90143be24b088a22347f1ae323af","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-74273","aliases":[],"title":"cxl/region: Block region delete during region creation","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncxl/region: Block region delete during region creation\n\nExpand the range lock, rename it \"regions_lock\", to disable region deletion\nin the critical period between construct_region() and attach_target(), as\nwell as the period between device_add() and registering the remove actions.\n\nOtherwise, userspace can confuse the kernel. It can violate the assumption\nthe region stays registered through the completion of cxl_add_to_region().\nIt can violate the assumption that devm_add_action_or_reset() is working\nwith a live 'struct cxl_region'.\n\nIt is ok for the region to disappear outside of those windows as that\nmirrors device hotplug flows where the proper locks are held.","state":0,"publishedAt":"2026-08-15T05:57:46.134+00:00","modifiedAt":"2026-10-21T12:45:15.193+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/cxl/core/port.c\",\n                        \"drivers/cxl/core/region.c\",\n                        \"drivers/cxl/cxl.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"a32320b71f085f8d82afedcf285f1682c8c00aed\",\n                            \"lessThan\": \"8efa9fcc1d31b29b31e0ac4efe48624a729796bc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a32320b71f085f8d82afedcf285f1682c8c00aed\",\n                            \"lessThan\": \"ecc86a28dc27509da511bb3f8c309750233e3177\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a32320b71f085f8d82afedcf285f1682c8c00aed\",\n                            \"lessThan\": \"98c7e206af48b4433b2192cc1a538db2acc49876\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a32320b71f085f8d82afedcf285f1682c8c00aed\",\n                            \"lessThan\": \"b0b6a9c65cb72c901fdcc6ae83d7afd70cdca1b8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a32320b71f085f8d82afedcf285f1682c8c00aed\",\n                            \"lessThan\": \"d91feb88692e81b00cd22f0125cfcd04970b4a0b\",\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/cxl/core/port.c\",\n                        \"drivers/cxl/core/region.c\",\n                        \"drivers/cxl/cxl.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.3\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.3\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.160\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.114\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.57\",\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":[],"references":["https://git.kernel.org/stable/c/8efa9fcc1d31b29b31e0ac4efe48624a729796bc","https://git.kernel.org/stable/c/ecc86a28dc27509da511bb3f8c309750233e3177","https://git.kernel.org/stable/c/98c7e206af48b4433b2192cc1a538db2acc49876","https://git.kernel.org/stable/c/b0b6a9c65cb72c901fdcc6ae83d7afd70cdca1b8","https://git.kernel.org/stable/c/d91feb88692e81b00cd22f0125cfcd04970b4a0b"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74273","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-74273","identifiers":["CVE-2026-74273"]},"retained":false,"historicalAffected":[]}],"coverage":[]}