{"id":"CVE-2026-98766","title":"kernel: usb: gadget: aspeed-vhub: cancel wake work on device removal (CVE-2026-98766)","summary":"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 …","severity":"medium","cvss":4.1,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":"CWE-825","vendor":"Red Hat","product":"Linux","affected":["Linux >= 7ecca2a4080cb6b1fa174adc588fce9e9014c43c < 0d39ac4f65f9357469518c70e42940e0d8b0e497","Linux >= 7ecca2a4080cb6b1fa174adc588fce9e9014c43c < f343bfa3fc9f6255602d66f4a7dbe7ddef13ba41","Linux >= 7ecca2a4080cb6b1fa174adc588fce9e9014c43c < 474e9e1852fb5ba0bfb26f123dd0cb361d0f4f4d","Linux >= 7ecca2a4080cb6b1fa174adc588fce9e9014c43c < c81504dfd2d93e345c98e7a012c2f2e74ce5b6a1","Linux >= 7ecca2a4080cb6b1fa174adc588fce9e9014c43c < 20388c8d1d74c203fec8194c45cd31afdfab934e","Linux 4.18"],"published":"2026-10-18","updated":"2026-10-23","sourceUpdated":"2026-10-23T06:41:05+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98766.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98766.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98766"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2555097"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98766"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98766"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98766.mbox"},{"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"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00168,"epssPercentile":0.05974,"ingestedAt":"2026-10-18T16:47:32.495Z","slug":"CVE-2026-98766","body":"## Overview\n\nA 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.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · updated 2026-10-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98766.json)\n\n**kernel: usb: gadget: aspeed-vhub: cancel wake work on device removal** — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-23.\n\nNot affected:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 6\n- Red Hat Enterprise Linux 7\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n- Red Hat OpenShift Container Platform 4\n\n## Remediation\n\nRefer to the advisory for fix availability.","depth":"sunlit","depthScore":23,"depthScoreParts":{"impact":22.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":228149,"id":"CVE-2026-98766","ts":1792758132321,"field":"cvss","old":null,"new":"4.1"},{"seq":228148,"id":"CVE-2026-98766","ts":1792758132321,"field":"severity","old":"none","new":"medium"}]}