{"id":"CVE-2026-80824","title":"kernel: usb: usbfs: fix use-after-free of usb_device in usbdev_release() (CVE-2026-80824)","summary":"A flaw was found in the Linux kernel's USB subsystem (usbfs). An unprivileged local attacker with read/write access to a /dev/bus/usb node could exploit a use-after-free vulnerability. This occurs because the usb_device structure is premat…","severity":"high","cvss":7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"vendor","cwe":"CWE-825","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","affected":["enterprise_linux 10","enterprise_linux 7","enterprise_linux 8","enterprise_linux 9","openshift_container_platform 4","enterprise_linux 6","enterprise_linux_baseos_v_8","enterprise_linux_crb_v_8"],"patched":["enterprise_linux_baseos_v_8","enterprise_linux_crb_v_8"],"published":"2026-09-04","updated":"2026-10-26","sourceUpdated":"2026-10-26T09:35:55+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80824.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80824.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-80824"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2528642"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80824"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80824"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80824.mbox"},{"url":"https://access.redhat.com/errata/RHSA-2026:89083"},{"url":"https://git.kernel.org/stable/c/0a960b88c5979f853019d4dc4957dfbeeb193440"},{"url":"https://git.kernel.org/stable/c/96f5520fc9a5e4bbf77ac93c9d5ce502f597e6cf"},{"url":"https://git.kernel.org/stable/c/bd4bffc621a8cb2f4d9ed9b6447415de524a3bef"},{"url":"https://git.kernel.org/stable/c/65879e0a452ca2a234b9475e0c11aff7a4343738"},{"url":"https://git.kernel.org/stable/c/b3cde26a66b04f1d90ed0b675899c88b4e49d424"},{"url":"https://git.kernel.org/stable/c/5f08c45bdcfd28d1171de38c5ef29fc89a76eedc"},{"url":"https://git.kernel.org/stable/c/7f0278e474c4d1c4457974ff1137cc385c944ab3"},{"url":"https://git.kernel.org/stable/c/47a7f98fbb5006d46d15a3a210ffdc61448a4f19"},{"url":"https://git.kernel.org/stable/c/0dd68b5d01d022fc9c5e71c82a82b0a94d3d0671"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00195,"epssPercentile":0.09133,"ingestedAt":"2026-10-19T09:16:01.506Z","slug":"CVE-2026-80824","body":"## Overview\n\nA flaw was found in the Linux kernel's USB subsystem (usbfs). An unprivileged local attacker with read/write access to a /dev/bus/usb node could exploit a use-after-free vulnerability. This occurs because the usb_device structure is prematurely freed before all pending operations are completed. Successful exploitation of this memory corruption flaw could lead to a system crash or potentially privilege escalation.\n\n## Vendor advisories\n\n- **RHSA-2026:89083** · Red Hat · fixed in: Red Hat Enterprise Linux BaseOS (v. 8), Red Hat Enterprise Linux CRB (v. 8) · released 2026-10-24 · [advisory](https://access.redhat.com/errata/RHSA-2026:89083)\n- **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4, Red Hat Enterprise Linux 6 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, … · updated 2026-10-26 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80824.json)\n\n**kernel: usb: usbfs: fix use-after-free of usb_device in usbdev_release()** — rated Important by Red Hat. Released 2026-09-04, updated 2026-10-26.\n\nAffected:\n\n- Red Hat Enterprise Linux 10\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- Red Hat Enterprise Linux 6\n\nFixed:\n\n- Red Hat Enterprise Linux BaseOS (v. 8)\n- Red Hat Enterprise Linux CRB (v. 8)\n\nNo fix planned:\n\n- Red Hat Enterprise Linux 10\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\nFor details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.\n\nRed Hat recommends treating all kernel errata as security-relevant. Given the kernel's fundamental role, any bug has a higher chance of impacting system security, even if that impact only becomes clear after a fix is published. Therefore, Red Hat prioritizes delivering fixes that improve our customers' overall security posture.\n\nBecause of this proactive approach, a patch may be associa… https://access.redhat.com/errata/RHSA-2026:89083\n\nWorkarounds / mitigations:\n\n- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":38.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":229347,"id":"CVE-2026-80824","ts":1793019701543,"field":"cvss","old":null,"new":"7"},{"seq":229346,"id":"CVE-2026-80824","ts":1793019701543,"field":"severity","old":"none","new":"high"}]}