{"id":"CVE-2026-98757","title":"kernel: usb: cdns3: fix use-after-free in cdns3_gadget_exit() (CVE-2026-98757)","summary":"A flaw was found in the Linux kernel's Cadence USB3 gadget driver. This vulnerability can lead to a Denial of Service (DoS) through a system crash or potentially allow privilege escalation. During device teardown, the driver releases memor…","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":"Red Hat Enterprise Linux 10","affected":["enterprise_linux 10"],"published":"2026-10-18","updated":"2026-10-23","sourceUpdated":"2026-10-23T05:21:36+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98757.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98757.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98757"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2555140"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98757"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98757"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98757.mbox"},{"url":"https://git.kernel.org/stable/c/efdf0ddaed01161dc1c1f25382856f2fd1c1f44f"},{"url":"https://git.kernel.org/stable/c/cc448700db656cceb4b411bf99a2e7132144d035"},{"url":"https://git.kernel.org/stable/c/95160fe606e685ff18de1e6ddcbc08289476004e"},{"url":"https://git.kernel.org/stable/c/159dada48ee2d53eff46e66a8011d67b2c209bbc"},{"url":"https://git.kernel.org/stable/c/ebe9b68c396792c15d0ac690d592e449e74ed804"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00168,"epssPercentile":0.05966,"ingestedAt":"2026-10-18T16:47:32.498Z","slug":"CVE-2026-98757","body":"## Overview\n\nA flaw was found in the Linux kernel's Cadence USB3 gadget driver. This vulnerability can lead to a Denial of Service (DoS) through a system crash or potentially allow privilege escalation. During device teardown, the driver releases memory without waiting for pending background work tasks to finish. A local user could exploit this flaw to trigger a use-after-free condition—accessing memory after it has been freed—causing memory corruption.\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 2026-10-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98757.json)\n\n**kernel: usb: cdns3: fix use-after-free in cdns3_gadget_exit()** — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-23.\n\nAffected:\n\n- Red Hat Enterprise Linux 10\n\nNo fix planned:\n\n- Red Hat Enterprise Linux 10\n\nNot affected:\n\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\nFix deferred","depth":"sunlit","depthScore":23,"depthScoreParts":{"impact":22.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":228163,"id":"CVE-2026-98757","ts":1792758139071,"field":"cvss","old":null,"new":"4.1"},{"seq":228162,"id":"CVE-2026-98757","ts":1792758139071,"field":"severity","old":"none","new":"medium"}]}