{"id":"CVE-2026-98696","title":"USB: serial: fix driver deregistration order","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: serial: fix driver deregistration order\n\nUSB serial driver modules register one driver for the USB bus and one or\nmore drivers for the ports on the USB serial bus.…","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-416"],"vendor":"Linux","product":"Linux","affected":["Linux >= 765e0ba62613fb90f09c1b5926750df0aa56f349 < e7ad832b1144df19cbbaaa655625c6f984e85b9f","Linux >= 765e0ba62613fb90f09c1b5926750df0aa56f349 < 9b085a06a0a411b0bcdf18b61c3ebf1be1c72ffe","Linux >= 765e0ba62613fb90f09c1b5926750df0aa56f349 < a1aa474768f69ea3a70da523f00f74c264cfa10e","Linux >= 765e0ba62613fb90f09c1b5926750df0aa56f349 < 428d479a0d31460fbf5969ab262ccd673f1fac01","Linux >= 765e0ba62613fb90f09c1b5926750df0aa56f349 < 646e5b28b4fdbc1b828a2398d6ced2c1dd308a46","Linux 3.4"],"published":"2026-10-18","updated":"2026-10-21","sourceUpdated":"2026-10-21T12:55:45.691Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98696","references":[{"url":"https://git.kernel.org/stable/c/e7ad832b1144df19cbbaaa655625c6f984e85b9f"},{"url":"https://git.kernel.org/stable/c/9b085a06a0a411b0bcdf18b61c3ebf1be1c72ffe"},{"url":"https://git.kernel.org/stable/c/a1aa474768f69ea3a70da523f00f74c264cfa10e"},{"url":"https://git.kernel.org/stable/c/428d479a0d31460fbf5969ab262ccd673f1fac01"},{"url":"https://git.kernel.org/stable/c/646e5b28b4fdbc1b828a2398d6ced2c1dd308a46"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98696.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98696"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2555170"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98696"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98696"},{"url":"https://kernelcve.org/list/?q=CVE-2026-98696"}],"tags":["cve.org","csaf","vex","red-hat"],"epss":0.00168,"epssPercentile":0.05988,"ingestedAt":"2026-10-18T16:47:32.517Z","slug":"CVE-2026-98696","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nUSB: serial: fix driver deregistration order\n\nUSB serial driver modules register one driver for the USB bus and one or\nmore drivers for the ports on the USB serial bus.\n\nWhen unloading a driver module, the USB driver must be deregistered\nbefore the USB serial bus drivers so that I/O is stopped before\nunbinding the ports to avoid use-after-free in completion handlers\naccessing port data.\n\nNote that the \"new_id\" attributes must first be removed to prevent new\nids from being added and triggering a probe of the USB driver after it\nhas been deregistered.\n\n## Affected\n\n- `Linux >= 765e0ba62613fb90f09c1b5926750df0aa56f349 < e7ad832b1144df19cbbaaa655625c6f984e85b9f`\n- `Linux >= 765e0ba62613fb90f09c1b5926750df0aa56f349 < 9b085a06a0a411b0bcdf18b61c3ebf1be1c72ffe`\n- `Linux >= 765e0ba62613fb90f09c1b5926750df0aa56f349 < a1aa474768f69ea3a70da523f00f74c264cfa10e`\n- `Linux >= 765e0ba62613fb90f09c1b5926750df0aa56f349 < 428d479a0d31460fbf5969ab262ccd673f1fac01`\n- `Linux >= 765e0ba62613fb90f09c1b5926750df0aa56f349 < 646e5b28b4fdbc1b828a2398d6ced2c1dd308a46`\n- `Linux 3.4`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10 · no fix planned: Red Hat Enterprise Linux 10 · updated 2026-10-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98696.json)","depth":"sunlit","depthScore":23,"depthScoreParts":{"impact":22.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":227106,"id":"CVE-2026-98696","ts":1792585130623,"field":"cvss","old":null,"new":"4.1"},{"seq":227105,"id":"CVE-2026-98696","ts":1792585130623,"field":"severity","old":"none","new":"medium"}]}