{"id":"CVE-2026-90216","revision":"7cd9dbdfe5c840cd874a22237b2f4313","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":[]}