{"api_version":"1","generated_at":"2026-09-17T23:31:14+00:00","cve":"CVE-2026-93081","urls":{"html":"https://cve.report/CVE-2026-93081","api":"https://cve.report/api/cve/CVE-2026-93081.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-93081","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-93081"},"summary":{"title":"firmware: arm_scmi: Fix SCMI device destroy lifetimes","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Fix SCMI device destroy lifetimes\n\nscmi_child_dev_find() drops the reference returned by\ndevice_find_child() before returning the scmi_device pointer. A\nconcurrent unregister can then release the device while the destroy path\nis still using the returned pointer.\n\nMake the lookup helper return the device_find_child() reference and keep\nit until scmi_device_destroy() has finished unregistering the child.\n\nAlso split device_unregister() in __scmi_device_destroy() so the SCMI bus\nID is not made reusable until after device_del() has removed the old\nscmi_dev.N name from sysfs. This avoids a new SCMI device reusing the\nsame ID while the old device is still registered.\n\nThe final device release callback is also a possible cleanup path when\nSCMI children are deleted by driver core recursion rather than\n__scmi_device_destroy(). Release the SCMI bus ID from a common helper\nused by destroy, register-failure and final-release paths, and clear\nscmi_dev->id after freeing it so the final release cannot free the same\nID again.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:18:02","updated_at":"2026-09-17 17:18:02"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/c59b3393df1348a12308aaabd5fbc58ed6b21cf5","name":"https://git.kernel.org/stable/c/c59b3393df1348a12308aaabd5fbc58ed6b21cf5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6abe8fe36b29ff51d1a42c2f338972883f4751a5","name":"https://git.kernel.org/stable/c/6abe8fe36b29ff51d1a42c2f338972883f4751a5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93081","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93081","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9ca67840c0ddf3f39407339624cef824a4f27599 c59b3393df1348a12308aaabd5fbc58ed6b21cf5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9ca67840c0ddf3f39407339624cef824a4f27599 6abe8fe36b29ff51d1a42c2f338972883f4751a5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 91ff1e9652fb9beb0174267d6bb38243dff211bb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ff4273d47da81b95ed9396110bcbd1b7b7470fe8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2fbf6c9695ad9f05e7e5c166bf43fac7cb3276b3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 969d8beaa2e374387bf9aa5602ef84fc50bb48d8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8a8a3547d5c4960da053df49c75bf623827a25da git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.15.182 5.16 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.1.138 6.2 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.6.90 6.7 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.12.28 6.13 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.14.6 6.15 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.15","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.15 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/firmware/arm_scmi/bus.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"c59b3393df1348a12308aaabd5fbc58ed6b21cf5","status":"affected","version":"9ca67840c0ddf3f39407339624cef824a4f27599","versionType":"git"},{"lessThan":"6abe8fe36b29ff51d1a42c2f338972883f4751a5","status":"affected","version":"9ca67840c0ddf3f39407339624cef824a4f27599","versionType":"git"},{"status":"affected","version":"91ff1e9652fb9beb0174267d6bb38243dff211bb","versionType":"git"},{"status":"affected","version":"ff4273d47da81b95ed9396110bcbd1b7b7470fe8","versionType":"git"},{"status":"affected","version":"2fbf6c9695ad9f05e7e5c166bf43fac7cb3276b3","versionType":"git"},{"status":"affected","version":"969d8beaa2e374387bf9aa5602ef84fc50bb48d8","versionType":"git"},{"status":"affected","version":"8a8a3547d5c4960da053df49c75bf623827a25da","versionType":"git"},{"lessThan":"5.16","status":"affected","version":"5.15.182","versionType":"semver"},{"lessThan":"6.2","status":"affected","version":"6.1.138","versionType":"semver"},{"lessThan":"6.7","status":"affected","version":"6.6.90","versionType":"semver"},{"lessThan":"6.13","status":"affected","version":"6.12.28","versionType":"semver"},{"lessThan":"6.15","status":"affected","version":"6.14.6","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/firmware/arm_scmi/bus.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.15"},{"lessThan":"6.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.182","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.138","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.90","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12.28","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14.6","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Fix SCMI device destroy lifetimes\n\nscmi_child_dev_find() drops the reference returned by\ndevice_find_child() before returning the scmi_device pointer. A\nconcurrent unregister can then release the device while the destroy path\nis still using the returned pointer.\n\nMake the lookup helper return the device_find_child() reference and keep\nit until scmi_device_destroy() has finished unregistering the child.\n\nAlso split device_unregister() in __scmi_device_destroy() so the SCMI bus\nID is not made reusable until after device_del() has removed the old\nscmi_dev.N name from sysfs. This avoids a new SCMI device reusing the\nsame ID while the old device is still registered.\n\nThe final device release callback is also a possible cleanup path when\nSCMI children are deleted by driver core recursion rather than\n__scmi_device_destroy(). Release the SCMI bus ID from a common helper\nused by destroy, register-failure and final-release paths, and clear\nscmi_dev->id after freeing it so the final release cannot free the same\nID again."}],"providerMetadata":{"dateUpdated":"2026-09-17T16:11:01.679Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/c59b3393df1348a12308aaabd5fbc58ed6b21cf5"},{"url":"https://git.kernel.org/stable/c/6abe8fe36b29ff51d1a42c2f338972883f4751a5"}],"title":"firmware: arm_scmi: Fix SCMI device destroy lifetimes","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-93081","datePublished":"2026-09-17T16:11:01.679Z","dateReserved":"2026-09-17T15:57:05.662Z","dateUpdated":"2026-09-17T16:11:01.679Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:18:02","lastModifiedDate":"2026-09-17 17:18:02","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"93081","Ordinal":"1","Title":"firmware: arm_scmi: Fix SCMI device destroy lifetimes","CVE":"CVE-2026-93081","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"93081","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Fix SCMI device destroy lifetimes\n\nscmi_child_dev_find() drops the reference returned by\ndevice_find_child() before returning the scmi_device pointer. A\nconcurrent unregister can then release the device while the destroy path\nis still using the returned pointer.\n\nMake the lookup helper return the device_find_child() reference and keep\nit until scmi_device_destroy() has finished unregistering the child.\n\nAlso split device_unregister() in __scmi_device_destroy() so the SCMI bus\nID is not made reusable until after device_del() has removed the old\nscmi_dev.N name from sysfs. This avoids a new SCMI device reusing the\nsame ID while the old device is still registered.\n\nThe final device release callback is also a possible cleanup path when\nSCMI children are deleted by driver core recursion rather than\n__scmi_device_destroy(). Release the SCMI bus ID from a common helper\nused by destroy, register-failure and final-release paths, and clear\nscmi_dev->id after freeing it so the final release cannot free the same\nID again.","Type":"Description","Title":"firmware: arm_scmi: Fix SCMI device destroy lifetimes"}]}}}