{"api_version":"1","generated_at":"2026-09-23T23:18:40+00:00","cve":"CVE-2026-92506","urls":{"html":"https://cve.report/CVE-2026-92506","api":"https://cve.report/api/cve/CVE-2026-92506.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-92506","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-92506"},"summary":{"title":"firmware: arm_scmi: Fix requested device removal race","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Fix requested device removal race\n\nscmi_protocol_device_unrequest() drops scmi_requested_devices_mtx while\nnotifying listeners but continues to retain the per-protocol list head.\nWhen two SCMI drivers for the same protocol unregister concurrently, one\nthread can remove the final request and free the list head while the other\nis running its notifier. The latter then dereferences the freed list head\nafter reacquiring the mutex and can free it a second time.\n\nComplete the list and IDR updates, including freeing an empty list head,\nbefore dropping the mutex. Keep the blocking notifier outside the critical\nsection and retain only the detached request across the callback.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:17:53","updated_at":"2026-09-17 17:17:53"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/1c35915eaaa81a12340c838c5c2ccb02be2194c3","name":"https://git.kernel.org/stable/c/1c35915eaaa81a12340c838c5c2ccb02be2194c3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/21d35c5f46e99e9047bb9ded3ecb5ab440dd75b3","name":"https://git.kernel.org/stable/c/21d35c5f46e99e9047bb9ded3ecb5ab440dd75b3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2ff7713b7308cd6bea3328f7cd750b5eaab42af3","name":"https://git.kernel.org/stable/c/2ff7713b7308cd6bea3328f7cd750b5eaab42af3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c3d4ef1c0ca6917aad6f1093b49f3932944a8c19","name":"https://git.kernel.org/stable/c/c3d4ef1c0ca6917aad6f1093b49f3932944a8c19","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2c4097e6c4aed276c5e9ec2ab331ab397ea780bf","name":"https://git.kernel.org/stable/c/2c4097e6c4aed276c5e9ec2ab331ab397ea780bf","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-92506","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92506","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d3cd7c525fd2ecce3a6c963f314969a54783d211 2ff7713b7308cd6bea3328f7cd750b5eaab42af3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d3cd7c525fd2ecce3a6c963f314969a54783d211 1c35915eaaa81a12340c838c5c2ccb02be2194c3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d3cd7c525fd2ecce3a6c963f314969a54783d211 c3d4ef1c0ca6917aad6f1093b49f3932944a8c19 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d3cd7c525fd2ecce3a6c963f314969a54783d211 21d35c5f46e99e9047bb9ded3ecb5ab440dd75b3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d3cd7c525fd2ecce3a6c963f314969a54783d211 2c4097e6c4aed276c5e9ec2ab331ab397ea780bf git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.3","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.3 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.157 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.110 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.52 6.18.* 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":{"cve_year":"2026","cve_id":"92506","cve":"CVE-2026-92506","epss":"0.002000000","percentile":"0.101660000","score_date":"2026-09-18","updated_at":"2026-09-19 00:06:17"},"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":"2ff7713b7308cd6bea3328f7cd750b5eaab42af3","status":"affected","version":"d3cd7c525fd2ecce3a6c963f314969a54783d211","versionType":"git"},{"lessThan":"1c35915eaaa81a12340c838c5c2ccb02be2194c3","status":"affected","version":"d3cd7c525fd2ecce3a6c963f314969a54783d211","versionType":"git"},{"lessThan":"c3d4ef1c0ca6917aad6f1093b49f3932944a8c19","status":"affected","version":"d3cd7c525fd2ecce3a6c963f314969a54783d211","versionType":"git"},{"lessThan":"21d35c5f46e99e9047bb9ded3ecb5ab440dd75b3","status":"affected","version":"d3cd7c525fd2ecce3a6c963f314969a54783d211","versionType":"git"},{"lessThan":"2c4097e6c4aed276c5e9ec2ab331ab397ea780bf","status":"affected","version":"d3cd7c525fd2ecce3a6c963f314969a54783d211","versionType":"git"}]},{"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":"6.3"},{"lessThan":"6.3","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.157","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-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.157","versionStartIncluding":"6.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"6.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"6.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"6.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.3","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 requested device removal race\n\nscmi_protocol_device_unrequest() drops scmi_requested_devices_mtx while\nnotifying listeners but continues to retain the per-protocol list head.\nWhen two SCMI drivers for the same protocol unregister concurrently, one\nthread can remove the final request and free the list head while the other\nis running its notifier. The latter then dereferences the freed list head\nafter reacquiring the mutex and can free it a second time.\n\nComplete the list and IDR updates, including freeing an empty list head,\nbefore dropping the mutex. Keep the blocking notifier outside the critical\nsection and retain only the detached request across the callback."}],"providerMetadata":{"dateUpdated":"2026-09-17T16:10:18.067Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/2ff7713b7308cd6bea3328f7cd750b5eaab42af3"},{"url":"https://git.kernel.org/stable/c/1c35915eaaa81a12340c838c5c2ccb02be2194c3"},{"url":"https://git.kernel.org/stable/c/c3d4ef1c0ca6917aad6f1093b49f3932944a8c19"},{"url":"https://git.kernel.org/stable/c/21d35c5f46e99e9047bb9ded3ecb5ab440dd75b3"},{"url":"https://git.kernel.org/stable/c/2c4097e6c4aed276c5e9ec2ab331ab397ea780bf"}],"title":"firmware: arm_scmi: Fix requested device removal race","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-92506","datePublished":"2026-09-17T16:10:18.067Z","dateReserved":"2026-09-16T12:21:13.872Z","dateUpdated":"2026-09-17T16:10:18.067Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:17:53","lastModifiedDate":"2026-09-17 17:17:53","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"92506","Ordinal":"1","Title":"firmware: arm_scmi: Fix requested device removal race","CVE":"CVE-2026-92506","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"92506","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Fix requested device removal race\n\nscmi_protocol_device_unrequest() drops scmi_requested_devices_mtx while\nnotifying listeners but continues to retain the per-protocol list head.\nWhen two SCMI drivers for the same protocol unregister concurrently, one\nthread can remove the final request and free the list head while the other\nis running its notifier. The latter then dereferences the freed list head\nafter reacquiring the mutex and can free it a second time.\n\nComplete the list and IDR updates, including freeing an empty list head,\nbefore dropping the mutex. Keep the blocking notifier outside the critical\nsection and retain only the detached request across the callback.","Type":"Description","Title":"firmware: arm_scmi: Fix requested device removal race"}]}}}