CVE-2026-90027

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-90027", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.782Z", "datePublished": "2026-09-16T10:33:29.700Z", "dateUpdated": "2026-10-19T08:56:43.664Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:56:43.664Z"}, "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": {"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"}, "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."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_port.c"], "versions": [{"version": "a4422ff221429c600c3dc5d0394fb3738b89d040", "lessThan": "4359b5f95c93a4658e08368fa6fab9d89eb98447", "status": "affected", "versionType": "git"}, {"version": "a4422ff221429c600c3dc5d0394fb3738b89d040", "lessThan": "c614d7c44ca7fb78867ba46b233acdb59287e8c8", "status": "affected", "versionType": "git"}, {"version": "a4422ff221429c600c3dc5d0394fb3738b89d040", "lessThan": "1ab669c2b44e1040ddfab7cd7f717aad580d17aa", "status": "affected", "versionType": "git"}, {"version": "a4422ff221429c600c3dc5d0394fb3738b89d040", "lessThan": "263f7d61a4201cde16849b2d016251806e7418be", "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/usb/typec/tcpm/qcom/qcom_pmic_typec_port.c"], "versions": [{"version": "6.5", "status": "affected"}, {"version": "0", "lessThan": "6.5", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.110", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.51", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.5", "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": "6.5", "versionEndExcluding": "6.12.110"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.5", "versionEndExcluding": "6.18.51"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.5", "versionEndExcluding": "7.2.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.5", "versionEndExcluding": "7.3"}]}]}], "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"}}}}

{}

{"affected": [{"affectedData": [{"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"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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."}], "id": "CVE-2026-90027", "lastModified": "2026-10-19T09:18:50.827", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-09-16T11:17:15.723", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1ab669c2b44e1040ddfab7cd7f717aad580d17aa"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/263f7d61a4201cde16849b2d016251806e7418be"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4359b5f95c93a4658e08368fa6fab9d89eb98447"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c614d7c44ca7fb78867ba46b233acdb59287e8c8"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a4422ff221429c600c3dc5d0394fb3738b89d040,4359b5f95c93a4658e08368fa6fab9d89eb98447)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a4422ff221429c600c3dc5d0394fb3738b89d040,c614d7c44ca7fb78867ba46b233acdb59287e8c8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a4422ff221429c600c3dc5d0394fb3738b89d040,1ab669c2b44e1040ddfab7cd7f717aad580d17aa)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a4422ff221429c600c3dc5d0394fb3738b89d040,263f7d61a4201cde16849b2d016251806e7418be)"}}], "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": "6.5"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.5)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.110,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.51,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.5,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.3-rc2,*]"}}], "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": "2026-09-17T00:30:05.800770+00:00", "updated": "2026-09-18T08:30:06.685076+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-416"]}