CVE-2026-98766

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98766", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.368Z", "datePublished": "2026-10-18T15:47:59.061Z", "dateUpdated": "2026-10-30T12:39:35.461Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:39:35.461Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: aspeed-vhub: cancel wake work on device removal\n\nwake_work is armed from the gadget .wakeup callback to resume suspended\ndownstream ports, and it is never cancelled in ast_vhub_remove(), so a\nwork item queued before or during removal can run after devm has freed\nvhub and its ports, a use-after-free.\n\nCancelling the work alone is not sufficient: usb_gadget_wakeup() takes\nno lock and the unbind path never clears wakeup_en, so a remote-wakeup\nrequest in flight on another CPU can re-arm the work after the cancel\nand before vhub is freed.\n\nast_vhub_del_dev() already clears d->registered under vhub->lock before\nunregistering the gadget. Refuse the wakeup in ast_vhub_udc_wakeup()\nonce d->registered is clear: the check and the schedule_work() are then\natomic against the unbind, so a wakeup that passed before the flag was\ncleared is drained by the cancel_work_sync() after the del_dev loop,\nand one that arrives later returns without arming. Also move INIT_WORK()\nto the top of ast_vhub_probe(), since the probe error path reuses\nast_vhub_remove() and would otherwise cancel a never-initialized work\nitem.\n\nThis issue was found by an in-house static analysis tool."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/gadget/udc/aspeed-vhub/core.c", "drivers/usb/gadget/udc/aspeed-vhub/dev.c", "drivers/usb/gadget/udc/aspeed-vhub/hub.c", "drivers/usb/gadget/udc/aspeed-vhub/vhub.h"], "versions": [{"version": "7ecca2a4080cb6b1fa174adc588fce9e9014c43c", "lessThan": "89b3fef8809ec1a9acf5f753eb89b9508d7e4466", "status": "affected", "versionType": "git"}, {"version": "7ecca2a4080cb6b1fa174adc588fce9e9014c43c", "lessThan": "3aed0c86afa7877d08722233a8b15e8c1ff8bcb8", "status": "affected", "versionType": "git"}, {"version": "7ecca2a4080cb6b1fa174adc588fce9e9014c43c", "lessThan": "552f580a18787cfbd83d28d7d76d584c29f2c4c2", "status": "affected", "versionType": "git"}, {"version": "7ecca2a4080cb6b1fa174adc588fce9e9014c43c", "lessThan": "0d39ac4f65f9357469518c70e42940e0d8b0e497", "status": "affected", "versionType": "git"}, {"version": "7ecca2a4080cb6b1fa174adc588fce9e9014c43c", "lessThan": "f343bfa3fc9f6255602d66f4a7dbe7ddef13ba41", "status": "affected", "versionType": "git"}, {"version": "7ecca2a4080cb6b1fa174adc588fce9e9014c43c", "lessThan": "474e9e1852fb5ba0bfb26f123dd0cb361d0f4f4d", "status": "affected", "versionType": "git"}, {"version": "7ecca2a4080cb6b1fa174adc588fce9e9014c43c", "lessThan": "c81504dfd2d93e345c98e7a012c2f2e74ce5b6a1", "status": "affected", "versionType": "git"}, {"version": "7ecca2a4080cb6b1fa174adc588fce9e9014c43c", "lessThan": "20388c8d1d74c203fec8194c45cd31afdfab934e", "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/gadget/udc/aspeed-vhub/core.c", "drivers/usb/gadget/udc/aspeed-vhub/dev.c", "drivers/usb/gadget/udc/aspeed-vhub/hub.c", "drivers/usb/gadget/udc/aspeed-vhub/vhub.h"], "versions": [{"version": "4.18", "status": "affected"}, {"version": "0", "lessThan": "4.18", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.273", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.224", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.113", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.56", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.10", "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": "4.18", "versionEndExcluding": "5.10.273"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "5.15.224"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "6.12.113"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "6.18.56"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "7.2.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/89b3fef8809ec1a9acf5f753eb89b9508d7e4466"}, {"url": "https://git.kernel.org/stable/c/3aed0c86afa7877d08722233a8b15e8c1ff8bcb8"}, {"url": "https://git.kernel.org/stable/c/552f580a18787cfbd83d28d7d76d584c29f2c4c2"}, {"url": "https://git.kernel.org/stable/c/0d39ac4f65f9357469518c70e42940e0d8b0e497"}, {"url": "https://git.kernel.org/stable/c/f343bfa3fc9f6255602d66f4a7dbe7ddef13ba41"}, {"url": "https://git.kernel.org/stable/c/474e9e1852fb5ba0bfb26f123dd0cb361d0f4f4d"}, {"url": "https://git.kernel.org/stable/c/c81504dfd2d93e345c98e7a012c2f2e74ce5b6a1"}, {"url": "https://git.kernel.org/stable/c/20388c8d1d74c203fec8194c45cd31afdfab934e"}], "title": "usb: gadget: aspeed-vhub: cancel wake work on device removal", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/usb/gadget/udc/aspeed-vhub/core.c", "drivers/usb/gadget/udc/aspeed-vhub/dev.c", "drivers/usb/gadget/udc/aspeed-vhub/hub.c", "drivers/usb/gadget/udc/aspeed-vhub/vhub.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "89b3fef8809ec1a9acf5f753eb89b9508d7e4466", "status": "affected", "version": "7ecca2a4080cb6b1fa174adc588fce9e9014c43c", "versionType": "git"}, {"lessThan": "3aed0c86afa7877d08722233a8b15e8c1ff8bcb8", "status": "affected", "version": "7ecca2a4080cb6b1fa174adc588fce9e9014c43c", "versionType": "git"}, {"lessThan": "552f580a18787cfbd83d28d7d76d584c29f2c4c2", "status": "affected", "version": "7ecca2a4080cb6b1fa174adc588fce9e9014c43c", "versionType": "git"}, {"lessThan": "0d39ac4f65f9357469518c70e42940e0d8b0e497", "status": "affected", "version": "7ecca2a4080cb6b1fa174adc588fce9e9014c43c", "versionType": "git"}, {"lessThan": "f343bfa3fc9f6255602d66f4a7dbe7ddef13ba41", "status": "affected", "version": "7ecca2a4080cb6b1fa174adc588fce9e9014c43c", "versionType": "git"}, {"lessThan": "474e9e1852fb5ba0bfb26f123dd0cb361d0f4f4d", "status": "affected", "version": "7ecca2a4080cb6b1fa174adc588fce9e9014c43c", "versionType": "git"}, {"lessThan": "c81504dfd2d93e345c98e7a012c2f2e74ce5b6a1", "status": "affected", "version": "7ecca2a4080cb6b1fa174adc588fce9e9014c43c", "versionType": "git"}, {"lessThan": "20388c8d1d74c203fec8194c45cd31afdfab934e", "status": "affected", "version": "7ecca2a4080cb6b1fa174adc588fce9e9014c43c", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/usb/gadget/udc/aspeed-vhub/core.c", "drivers/usb/gadget/udc/aspeed-vhub/dev.c", "drivers/usb/gadget/udc/aspeed-vhub/hub.c", "drivers/usb/gadget/udc/aspeed-vhub/vhub.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.18"}, {"lessThan": "4.18", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.273", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.224", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.113", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.56", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.10", "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: gadget: aspeed-vhub: cancel wake work on device removal\n\nwake_work is armed from the gadget .wakeup callback to resume suspended\ndownstream ports, and it is never cancelled in ast_vhub_remove(), so a\nwork item queued before or during removal can run after devm has freed\nvhub and its ports, a use-after-free.\n\nCancelling the work alone is not sufficient: usb_gadget_wakeup() takes\nno lock and the unbind path never clears wakeup_en, so a remote-wakeup\nrequest in flight on another CPU can re-arm the work after the cancel\nand before vhub is freed.\n\nast_vhub_del_dev() already clears d->registered under vhub->lock before\nunregistering the gadget. Refuse the wakeup in ast_vhub_udc_wakeup()\nonce d->registered is clear: the check and the schedule_work() are then\natomic against the unbind, so a wakeup that passed before the flag was\ncleared is drained by the cancel_work_sync() after the del_dev loop,\nand one that arrives later returns without arming. Also move INIT_WORK()\nto the top of ast_vhub_probe(), since the probe error path reuses\nast_vhub_remove() and would otherwise cancel a never-initialized work\nitem.\n\nThis issue was found by an in-house static analysis tool."}], "id": "CVE-2026-98766", "lastModified": "2026-10-30T13:21:26.200", "metrics": {}, "published": "2026-10-18T16:17:30.440", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0d39ac4f65f9357469518c70e42940e0d8b0e497"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/20388c8d1d74c203fec8194c45cd31afdfab934e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3aed0c86afa7877d08722233a8b15e8c1ff8bcb8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/474e9e1852fb5ba0bfb26f123dd0cb361d0f4f4d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/552f580a18787cfbd83d28d7d76d584c29f2c4c2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/89b3fef8809ec1a9acf5f753eb89b9508d7e4466"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c81504dfd2d93e345c98e7a012c2f2e74ce5b6a1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f343bfa3fc9f6255602d66f4a7dbe7ddef13ba41"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: usb: gadget: aspeed-vhub: cancel wake work on device removal", "id": "2555097", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2555097"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nusb: gadget: aspeed-vhub: cancel wake work on device removal\nwake_work is armed from the gadget .wakeup callback to resume suspended\ndownstream ports, and it is never cancelled in ast_vhub_remove(), so a\nwork item queued before or during removal can run after devm has freed\nvhub and its ports, a use-after-free.\nCancelling the work alone is not sufficient: usb_gadget_wakeup() takes\nno lock and the unbind path never clears wakeup_en, so a remote-wakeup\nrequest in flight on another CPU can re-arm the work after the cancel\nand before vhub is freed.\nast_vhub_del_dev() already clears d->registered under vhub->lock before\nunregistering the gadget. Refuse the wakeup in ast_vhub_udc_wakeup()\nonce d->registered is clear: the check and the schedule_work() are then\natomic against the unbind, so a wakeup that passed before the flag was\ncleared is drained by the cancel_work_sync() after the del_dev loop,\nand one that arrives later returns without arming. Also move INIT_WORK()\nto the top of ast_vhub_probe(), since the probe error path reuses\nast_vhub_remove() and would otherwise cancel a never-initialized work\nitem.\nThis issue was found by an in-house static analysis tool.", "A flaw was found in the Linux kernel's Aspeed virtual hub (vhub) driver. When a device is removed, scheduled wakeup tasks are not properly canceled, allowing background work to run after the associated memory structures have been freed. A local attacker could exploit this race condition to trigger a use-after-free condition, resulting in memory corruption and a Denial of Service (DoS) via a system crash."], "name": "CVE-2026-98766", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98766\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98766\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98766.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7ecca2a4080cb6b1fa174adc588fce9e9014c43c,f343bfa3fc9f6255602d66f4a7dbe7ddef13ba41)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7ecca2a4080cb6b1fa174adc588fce9e9014c43c,474e9e1852fb5ba0bfb26f123dd0cb361d0f4f4d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7ecca2a4080cb6b1fa174adc588fce9e9014c43c,c81504dfd2d93e345c98e7a012c2f2e74ce5b6a1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7ecca2a4080cb6b1fa174adc588fce9e9014c43c,20388c8d1d74c203fec8194c45cd31afdfab934e)"}}], "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": "4.18"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.18)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.113,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.56,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.10,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3,*]"}}], "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": "2026-10-18T23:00:12.908281+00:00", "updated": "2026-10-23T20:00:16.396559+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}