{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-90215","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-11T19:38:34.793Z","datePublished":"2026-09-17T16:07:28.071Z","dateUpdated":"2026-09-17T16:07:28.071Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-17T16:07:28.071Z"},"descriptions":[{"lang":"en","value":"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/mtd/ubi/build.c"],"versions":[{"version":"7e84c961b2eb062d2f47037dcca52dcd1d3615b5","lessThan":"87812858c4c8df979cb70bcd0040b925a543df6f","status":"affected","versionType":"git"},{"version":"7e84c961b2eb062d2f47037dcca52dcd1d3615b5","lessThan":"e065960366b55ab21e6c643c30dec2a41451900b","status":"affected","versionType":"git"},{"version":"7e84c961b2eb062d2f47037dcca52dcd1d3615b5","lessThan":"851c5e9a829d56cb0982965f07ef8966a6722884","status":"affected","versionType":"git"},{"version":"7e84c961b2eb062d2f47037dcca52dcd1d3615b5","lessThan":"31dd710cd84d5dd63c49f640d3a9f36c9699ca95","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/mtd/ubi/build.c"],"versions":[{"version":"6.9","status":"affected"},{"version":"0","lessThan":"6.9","status":"unaffected","versionType":"semver"},{"version":"6.12.110","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.52","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.6","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3-rc1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.18.52"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"7.3-rc1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/87812858c4c8df979cb70bcd0040b925a543df6f"},{"url":"https://git.kernel.org/stable/c/e065960366b55ab21e6c643c30dec2a41451900b"},{"url":"https://git.kernel.org/stable/c/851c5e9a829d56cb0982965f07ef8966a6722884"},{"url":"https://git.kernel.org/stable/c/31dd710cd84d5dd63c49f640d3a9f36c9699ca95"}],"title":"mtd: ubi: Release device reference on busy detach","x_generator":{"engine":"bippy-1.2.0"}}}}