{"id":"CVE-2026-90215","revision":"5daf2f1d17924240819f5906b08ccbb3","records":[{"revision":"5daf2f1d17924240819f5906b08ccbb3","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-90215","aliases":[],"title":"mtd: ubi: Release device reference on busy detach","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: ubi: Release device reference on busy detach\n\nubi_detach_mtd_dev() obtains a device reference through ubi_get_device()\nbefore checking whether the UBI device is busy. The busy return path drops\nubi->ref_count but leaves the device reference held, so the device object\ncannot be released after a later detach.\n\nDrop the device reference before returning -EBUSY.","state":0,"publishedAt":"2026-09-17T16:07:28.071+00:00","modifiedAt":"2026-10-19T08:59:51.207+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/mtd/ubi/build.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"7e84c961b2eb062d2f47037dcca52dcd1d3615b5\",\n                            \"lessThan\": \"87812858c4c8df979cb70bcd0040b925a543df6f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7e84c961b2eb062d2f47037dcca52dcd1d3615b5\",\n                            \"lessThan\": \"e065960366b55ab21e6c643c30dec2a41451900b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7e84c961b2eb062d2f47037dcca52dcd1d3615b5\",\n                            \"lessThan\": \"851c5e9a829d56cb0982965f07ef8966a6722884\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7e84c961b2eb062d2f47037dcca52dcd1d3615b5\",\n                            \"lessThan\": \"31dd710cd84d5dd63c49f640d3a9f36c9699ca95\",\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/mtd/ubi/build.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.9\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.9\",\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\": \"7.2.6\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/87812858c4c8df979cb70bcd0040b925a543df6f","https://git.kernel.org/stable/c/e065960366b55ab21e6c643c30dec2a41451900b","https://git.kernel.org/stable/c/851c5e9a829d56cb0982965f07ef8966a6722884","https://git.kernel.org/stable/c/31dd710cd84d5dd63c49f640d3a9f36c9699ca95"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-90215","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-90215","identifiers":["CVE-2026-90215"]},"retained":false,"historicalAffected":[]}],"coverage":[]}