{"api_version":"1","generated_at":"2026-10-27T05:58:25+00:00","cve":"CVE-2026-90027","urls":{"html":"https://cve.report/CVE-2026-90027","api":"https://cve.report/api/cve/CVE-2026-90027.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-90027","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-90027"},"summary":{"title":"usb: typec: qcom-pmic-typec: disable cc_debounce_dwork on stop","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: qcom-pmic-typec: disable cc_debounce_dwork on stop\n\ncc_debounce_dwork is queued from the set_cc() and start_toggling()\ncallbacks, which run from TCPM's kthread worker.  port_stop() returns\nbefore tcpm_unregister_port() destroys that worker.  Flushing the worker\nduring unregister may therefore run a callback which queues the delayed\nwork after port_stop() has returned.\n\nThe delayed work can then run after devres has freed pmic_typec_port.\n\nUse disable_delayed_work_sync() in port_stop() to cancel a pending\ninstance and prevent the TCPM callbacks from queueing another one.\n\nThis issue was found by an in-house static analysis tool.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-16 11:17:15","updated_at":"2026-10-19 09:18:50"},"problem_types":[],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/c614d7c44ca7fb78867ba46b233acdb59287e8c8","name":"https://git.kernel.org/stable/c/c614d7c44ca7fb78867ba46b233acdb59287e8c8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4359b5f95c93a4658e08368fa6fab9d89eb98447","name":"https://git.kernel.org/stable/c/4359b5f95c93a4658e08368fa6fab9d89eb98447","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1ab669c2b44e1040ddfab7cd7f717aad580d17aa","name":"https://git.kernel.org/stable/c/1ab669c2b44e1040ddfab7cd7f717aad580d17aa","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/263f7d61a4201cde16849b2d016251806e7418be","name":"https://git.kernel.org/stable/c/263f7d61a4201cde16849b2d016251806e7418be","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90027","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90027","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a4422ff221429c600c3dc5d0394fb3738b89d040 4359b5f95c93a4658e08368fa6fab9d89eb98447 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a4422ff221429c600c3dc5d0394fb3738b89d040 c614d7c44ca7fb78867ba46b233acdb59287e8c8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a4422ff221429c600c3dc5d0394fb3738b89d040 1ab669c2b44e1040ddfab7cd7f717aad580d17aa git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a4422ff221429c600c3dc5d0394fb3738b89d040 263f7d61a4201cde16849b2d016251806e7418be git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.5","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.5 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 6.18.51 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.5 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3 * 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/usb/typec/tcpm/qcom/qcom_pmic_typec_port.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"4359b5f95c93a4658e08368fa6fab9d89eb98447","status":"affected","version":"a4422ff221429c600c3dc5d0394fb3738b89d040","versionType":"git"},{"lessThan":"c614d7c44ca7fb78867ba46b233acdb59287e8c8","status":"affected","version":"a4422ff221429c600c3dc5d0394fb3738b89d040","versionType":"git"},{"lessThan":"1ab669c2b44e1040ddfab7cd7f717aad580d17aa","status":"affected","version":"a4422ff221429c600c3dc5d0394fb3738b89d040","versionType":"git"},{"lessThan":"263f7d61a4201cde16849b2d016251806e7418be","status":"affected","version":"a4422ff221429c600c3dc5d0394fb3738b89d040","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_port.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.5"},{"lessThan":"6.5","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.110","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.51","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"6.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.51","versionStartIncluding":"6.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.5","versionStartIncluding":"6.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","versionStartIncluding":"6.5","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: qcom-pmic-typec: disable cc_debounce_dwork on stop\n\ncc_debounce_dwork is queued from the set_cc() and start_toggling()\ncallbacks, which run from TCPM's kthread worker.  port_stop() returns\nbefore tcpm_unregister_port() destroys that worker.  Flushing the worker\nduring unregister may therefore run a callback which queues the delayed\nwork after port_stop() has returned.\n\nThe delayed work can then run after devres has freed pmic_typec_port.\n\nUse disable_delayed_work_sync() in port_stop() to cancel a pending\ninstance and prevent the TCPM callbacks from queueing another one.\n\nThis issue was found by an in-house static analysis tool."}],"metrics":[{"cvssV3_1":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"scenarios":[{"lang":"en","value":"AV:L - The use-after-free is reached on Qualcomm PMIC Type-C platform-driver teardown (sysfs unbind, rmmod, or probe-error unwind after TCPM is registered), not by parsing USB-C/PD traffic from a plugged partner. That matches other USB gadget/UDC and onboard Type-C teardown UAFs scored Local and is higher severity than Physical.\nAC:L - An attacker who initiates remove controls both sides: TCPM set_cc/start_toggling queue the 2ms cc_debounce_dwork, and kthread_destroy_worker() in tcpm_unregister_port() can run those callbacks after port_stop() returns, re-queueing work that then runs after devres frees pmic_typec_port. Use-after-free bugs are AC:L unless the attacker cannot influence the race.\nPR:L - Highest reasonable exposure is a local account on Qualcomm phones, automotive, and embedded boards that manage the Type-C/USB stack, where platform unbind or USB HAL access is often delegated beyond init-namespace root. Uncertain Low versus High, so Low per the overestimate rule.\nUI:N - The attacker initiates driver unbind, module unload, or a failing re-probe themselves; no separate victim action such as plugging a USB-C cable, mounting a filesystem, or opening a device node is required.\nS:U - The use-after-free corrupts the host kernel pmic_typec_port heap object within the same OS security authority and does not cross a VM, IOMMU, or sandbox boundary.\nC:H - qcom_pmic_typec_port_cc_debounce() recovers the freed pmic_typec_port via container_of and reads its spinlock and device pointer; per CNA guidance a use-after-free enables arbitrary kernel memory disclosure.\nI:H - The same delayed work writes debouncing_cc and performs spin_lock/unlock on the freed object, and the pending delayed_work lives inside pmic_typec_port, so heap spray yields an arbitrary write or workqueue function-pointer hijack.\nA:H - Use-after-free of pmic_typec_port from system-wq delayed work after remove causes a kernel oops or panic even without a full exploit, so availability impact is High."}]}],"providerMetadata":{"dateUpdated":"2026-10-19T08:56:43.664Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/4359b5f95c93a4658e08368fa6fab9d89eb98447"},{"url":"https://git.kernel.org/stable/c/c614d7c44ca7fb78867ba46b233acdb59287e8c8"},{"url":"https://git.kernel.org/stable/c/1ab669c2b44e1040ddfab7cd7f717aad580d17aa"},{"url":"https://git.kernel.org/stable/c/263f7d61a4201cde16849b2d016251806e7418be"}],"title":"usb: typec: qcom-pmic-typec: disable cc_debounce_dwork on stop","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-90027","datePublished":"2026-09-16T10:33:29.700Z","dateReserved":"2026-09-11T19:38:34.782Z","dateUpdated":"2026-10-19T08:56:43.664Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-16 11:17:15","lastModifiedDate":"2026-10-19 09:18:50","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"90027","Ordinal":"1","Title":"usb: typec: qcom-pmic-typec: disable cc_debounce_dwork on stop","CVE":"CVE-2026-90027","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"90027","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: qcom-pmic-typec: disable cc_debounce_dwork on stop\n\ncc_debounce_dwork is queued from the set_cc() and start_toggling()\ncallbacks, which run from TCPM's kthread worker.  port_stop() returns\nbefore tcpm_unregister_port() destroys that worker.  Flushing the worker\nduring unregister may therefore run a callback which queues the delayed\nwork after port_stop() has returned.\n\nThe delayed work can then run after devres has freed pmic_typec_port.\n\nUse disable_delayed_work_sync() in port_stop() to cancel a pending\ninstance and prevent the TCPM callbacks from queueing another one.\n\nThis issue was found by an in-house static analysis tool.","Type":"Description","Title":"usb: typec: qcom-pmic-typec: disable cc_debounce_dwork on stop"}]}}}