{"id":"CVE-2026-90216","revision":null,"records":[{"revision":"7cd9dbdfe5c840cd874a22237b2f4313","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-90216","aliases":[],"title":"ubi: Fix rollback for explicit UBI device numbers","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nubi: Fix rollback for explicit UBI device numbers\n\nubi_init_attach() rolls back module initialization failures by scanning\nubi_devices[0..i-1], where i is the mtd= parameter index. That assumes\nthe parameter index matches the UBI device number.\n\nThat assumption is not true when mtd= specifies an explicit ubi_num. A\nsuccessfully attached device can be stored at a higher ubi_devices[]\nslot, and a later failure can miss it during rollback.\n\nScan the full ubi_devices[] array and detach by the actual array index,\nmatching the way UBI devices are stored.","state":0,"publishedAt":"2026-09-17T16:07:28.73+00:00","modifiedAt":"2026-10-19T08:59:52.143+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\": \"83ff59a066637a6c28844bbf43009459408240f4\",\n \"lessThan\": \"83c978921688af40dcab6db74882d1ff9b0b765c\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"83ff59a066637a6c28844bbf43009459408240f4\",\n \"lessThan\": \"6b92e66ec6dd8019e8efb2a568ef7c967c5a18c5\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"83ff59a066637a6c28844bbf43009459408240f4\",\n \"lessThan\": \"4417ab6ecad01cf2d01045ef8104c95a66b0e893\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"83ff59a066637a6c28844bbf43009459408240f4\",\n \"lessThan\": \"552e565ed8846e7db143e4a6bdf3f5677453c686\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"83ff59a066637a6c28844bbf43009459408240f4\",\n \"lessThan\": \"9754f049d5f1945d4c691d1f52824eb8daf8f9be\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"83ff59a066637a6c28844bbf43009459408240f4\",\n \"lessThan\": \"e3f7e58189bc222971ddc860f1716f37e51ba996\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"83ff59a066637a6c28844bbf43009459408240f4\",\n \"lessThan\": \"87b3da4acb860605643ebee312178f13b20744cf\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"83ff59a066637a6c28844bbf43009459408240f4\",\n \"lessThan\": \"5b0a6b554e12a97f9771a9a9f4ea1f5457373c73\",\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\": \"3.11\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"3.11\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.270\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.221\",\n \"lessThanOrEqual\": \"5.15.*\",\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\": \"7.2.6\",\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/83c978921688af40dcab6db74882d1ff9b0b765c","https://git.kernel.org/stable/c/6b92e66ec6dd8019e8efb2a568ef7c967c5a18c5","https://git.kernel.org/stable/c/4417ab6ecad01cf2d01045ef8104c95a66b0e893","https://git.kernel.org/stable/c/552e565ed8846e7db143e4a6bdf3f5677453c686","https://git.kernel.org/stable/c/9754f049d5f1945d4c691d1f52824eb8daf8f9be","https://git.kernel.org/stable/c/e3f7e58189bc222971ddc860f1716f37e51ba996","https://git.kernel.org/stable/c/87b3da4acb860605643ebee312178f13b20744cf","https://git.kernel.org/stable/c/5b0a6b554e12a97f9771a9a9f4ea1f5457373c73"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-90216","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-90216","identifiers":["CVE-2026-90216"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-5923d59598fe46c98ec384fbfaf44bc7","complete":false,"records":13654,"lastAttemptAt":"2026-11-09T03:16:18.1412099+00:00","lastSuccessAt":"2026-11-09T03:16:18.138+00:00","error":"6 identifier lookups failed; latest failures include HTTP 403. Other identifiers were checked independently.","lastVerifiedAt":"2026-11-09T03:16:18.138+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13655,"expectedIdentifiers":13706,"failedIdentifiers":6},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-09T03:04:09.5264463+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-09T03:04:09.5264463+00:00","lastSuccessAt":"2026-11-09T03:04:09.6884561+00:00","error":null,"lastVerifiedAt":"2026-11-09T03:04:09.6884561+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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