CVE-2026-90215

{"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": "2026-10-19T08:59:51.207Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:59:51.207Z"}, "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", "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"}]}]}], "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"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/mtd/ubi/build.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "87812858c4c8df979cb70bcd0040b925a543df6f", "status": "affected", "version": "7e84c961b2eb062d2f47037dcca52dcd1d3615b5", "versionType": "git"}, {"lessThan": "e065960366b55ab21e6c643c30dec2a41451900b", "status": "affected", "version": "7e84c961b2eb062d2f47037dcca52dcd1d3615b5", "versionType": "git"}, {"lessThan": "851c5e9a829d56cb0982965f07ef8966a6722884", "status": "affected", "version": "7e84c961b2eb062d2f47037dcca52dcd1d3615b5", "versionType": "git"}, {"lessThan": "31dd710cd84d5dd63c49f640d3a9f36c9699ca95", "status": "affected", "version": "7e84c961b2eb062d2f47037dcca52dcd1d3615b5", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/mtd/ubi/build.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.9"}, {"lessThan": "6.9", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.110", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.52", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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."}], "id": "CVE-2026-90215", "lastModified": "2026-10-19T09:19:11.643", "metrics": {}, "published": "2026-09-17T17:17:16.790", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/31dd710cd84d5dd63c49f640d3a9f36c9699ca95"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/851c5e9a829d56cb0982965f07ef8966a6722884"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/87812858c4c8df979cb70bcd0040b925a543df6f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e065960366b55ab21e6c643c30dec2a41451900b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7e84c961b2eb062d2f47037dcca52dcd1d3615b5,87812858c4c8df979cb70bcd0040b925a543df6f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7e84c961b2eb062d2f47037dcca52dcd1d3615b5,e065960366b55ab21e6c643c30dec2a41451900b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7e84c961b2eb062d2f47037dcca52dcd1d3615b5,851c5e9a829d56cb0982965f07ef8966a6722884)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7e84c961b2eb062d2f47037dcca52dcd1d3615b5,31dd710cd84d5dd63c49f640d3a9f36c9699ca95)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.9"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.9)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.110,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.52,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.6,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-19T12:30:17.532633+00:00", "updated": "2026-09-20T02:45:18.437518+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-754"]}