CVE-2026-90402

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-90402", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.811Z", "datePublished": "2026-09-17T16:09:32.194Z", "dateUpdated": "2026-10-19T09:03:06.272Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:03:06.272Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbus: mhi: host: Fix controller cleanup on EDL sysfs failure\n\nmhi_register_controller() adds the controller device before creating the\noptional trigger_edl sysfs file. If sysfs_create_file() fails, the error\npath only drops the device reference and leaves the device registered.\n\nHence, call device_del() in the error path before put_device()."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The missing device_del() is in mhi_register_controller() after device_add(), reached from mhi_pci_probe() for EDL-capable PCI WWAN controllers that set edl_trigger (Qualcomm SDX/QDU). The leftover mhi_dev is then opened via local sysfs; sysfs_create_file(trigger_edl) is not fed by a remote protocol message.\nAC:H - The broken err_release_dev path runs only when sysfs_create_file(&mhi_dev->dev.kobj, &dev_attr_trigger_edl.attr) fails after device_add() succeeded. That helper fails on kernfs errors such as -ENOMEM; a later mhi_pci_probe retries device_add(\"mhi%d\") and gets -EEXIST instead, so the attacker cannot reliably re-enter this exact failure.\nPR:L - device_add() installs mhi_dev_groups before trigger_edl is created, so serial_number and oem_pk_hash exist as DEVICE_ATTR_RO (0444) on /sys/bus/mhi/devices/mhiN/. After probe failure those files remain; an unprivileged local user can read them with no CAP_SYS_ADMIN and no user-namespace capability.\nUI:N - The attacker reads the leftover /sys/bus/mhi/devices/mhiN/serial_number or oem_pk_hash (or writes soc_reset) themselves. No second user must plug the WWAN card, mount media, or confirm a prompt.\nS:U - On the failed mhi_pci_probe(), device_unbind_cleanup() frees mhi_pdev via devres_release_all() while the still-registered mhi_dev stays a child of the PCI device. That is a host-kernel use-after-free of struct mhi_controller, not a VM, IOMMU, or sandbox escape.\nC:H - Without device_del(), mhi_dev remains in sysfs with mhi_dev->mhi_cntrl pointing at mhi_pdev freed on probe failure. serial_number_show reads mhi_cntrl->serial_number from that freed object, and oem_pk_hash_show calls mhi_read_reg() on it, disclosing kernel memory.\nI:H - oem_pk_hash_show calls mhi_read_reg(), which invokes the freed mhi_cntrl->read_reg function pointer; soc_reset_store calls mhi_soc_reset() which uses mhi_cntrl->write_reg/reset. Replacing the freed struct mhi_controller yields an arbitrary call/write primitive for control-flow hijack.\nA:H - serial_number_show, oem_pk_hash_show, and soc_reset_store dereference the dangling mhi_cntrl and oops or panic. The leaked device also keeps the mhiN name while ida_free() reuses the index, so a later mhi_register_controller() device_add() fails until reboot."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/bus/mhi/host/init.c"], "versions": [{"version": "17553ba8e19dee8770b3dcc597d49dcc3418f3b0", "lessThan": "7943dc67250fad6ceac0dd089c6ad5776e4be71d", "status": "affected", "versionType": "git"}, {"version": "17553ba8e19dee8770b3dcc597d49dcc3418f3b0", "lessThan": "4fb17a7c437f145353e93e6a9791f6db70e1cc63", "status": "affected", "versionType": "git"}, {"version": "17553ba8e19dee8770b3dcc597d49dcc3418f3b0", "lessThan": "4743959aa8d876b5b456a62e8a62eb770db7afe9", "status": "affected", "versionType": "git"}, {"version": "17553ba8e19dee8770b3dcc597d49dcc3418f3b0", "lessThan": "0d5b9e66591d4e2a4376ac82c8cda889a29ba3ee", "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/bus/mhi/host/init.c"], "versions": [{"version": "6.10", "status": "affected"}, {"version": "0", "lessThan": "6.10", "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": "6.10", "versionEndExcluding": "6.12.110"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "6.18.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/7943dc67250fad6ceac0dd089c6ad5776e4be71d"}, {"url": "https://git.kernel.org/stable/c/4fb17a7c437f145353e93e6a9791f6db70e1cc63"}, {"url": "https://git.kernel.org/stable/c/4743959aa8d876b5b456a62e8a62eb770db7afe9"}, {"url": "https://git.kernel.org/stable/c/0d5b9e66591d4e2a4376ac82c8cda889a29ba3ee"}], "title": "bus: mhi: host: Fix controller cleanup on EDL sysfs failure", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/bus/mhi/host/init.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "7943dc67250fad6ceac0dd089c6ad5776e4be71d", "status": "affected", "version": "17553ba8e19dee8770b3dcc597d49dcc3418f3b0", "versionType": "git"}, {"lessThan": "4fb17a7c437f145353e93e6a9791f6db70e1cc63", "status": "affected", "version": "17553ba8e19dee8770b3dcc597d49dcc3418f3b0", "versionType": "git"}, {"lessThan": "4743959aa8d876b5b456a62e8a62eb770db7afe9", "status": "affected", "version": "17553ba8e19dee8770b3dcc597d49dcc3418f3b0", "versionType": "git"}, {"lessThan": "0d5b9e66591d4e2a4376ac82c8cda889a29ba3ee", "status": "affected", "version": "17553ba8e19dee8770b3dcc597d49dcc3418f3b0", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/bus/mhi/host/init.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.10"}, {"lessThan": "6.10", "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\nbus: mhi: host: Fix controller cleanup on EDL sysfs failure\n\nmhi_register_controller() adds the controller device before creating the\noptional trigger_edl sysfs file. If sysfs_create_file() fails, the error\npath only drops the device reference and leaves the device registered.\n\nHence, call device_del() in the error path before put_device()."}], "id": "CVE-2026-90402", "lastModified": "2026-10-19T09:19:34.347", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-09-17T17:17:39.987", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0d5b9e66591d4e2a4376ac82c8cda889a29ba3ee"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4743959aa8d876b5b456a62e8a62eb770db7afe9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4fb17a7c437f145353e93e6a9791f6db70e1cc63"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7943dc67250fad6ceac0dd089c6ad5776e4be71d"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[17553ba8e19dee8770b3dcc597d49dcc3418f3b0,7943dc67250fad6ceac0dd089c6ad5776e4be71d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[17553ba8e19dee8770b3dcc597d49dcc3418f3b0,4fb17a7c437f145353e93e6a9791f6db70e1cc63)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[17553ba8e19dee8770b3dcc597d49dcc3418f3b0,4743959aa8d876b5b456a62e8a62eb770db7afe9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[17553ba8e19dee8770b3dcc597d49dcc3418f3b0,0d5b9e66591d4e2a4376ac82c8cda889a29ba3ee)"}}], "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": "6.10"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.10)"}}, {"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": "2026-09-19T09:00:14.015628+00:00", "updated": "2026-09-20T01:45:17.012714+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}