{"id":"CVE-2026-89735","title":"kernel: usb: gadget: midi2: remove default configfs groups on teardown (CVE-2026-89735)","summary":"A flaw was found in the Linux kernel's USB gadget MIDI2 driver. The driver fails to properly remove default configuration file system (configfs) groups during teardown, leading to a resource leak. A local attacker could exploit this vulner…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":"CWE-911","vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","affected":["openshift_container_platform 4"],"published":"2026-09-11","updated":"2026-09-21","sourceUpdated":"2026-09-21T17:28:05+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89735.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89735.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89735"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532401"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89735"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89735"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89735.mbox"},{"url":"https://git.kernel.org/stable/c/0f6bffb5008f0cba9cad5ded2caccc64466a6e54"},{"url":"https://git.kernel.org/stable/c/4beda67ee72e0c8df5b49951dd8b96f6adb25e02"},{"url":"https://git.kernel.org/stable/c/9ea5dfb2bfef4f8a7e704d1921d8a790cb7fb700"},{"url":"https://git.kernel.org/stable/c/a15c2acd3083461f91725760e59dff88b33c28f6"},{"url":"https://git.kernel.org/stable/c/79dbedf40ad930f83839e564394dc5d1a54938c6"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00168,"epssPercentile":0.06455,"ingestedAt":"2026-09-14T15:23:07.449Z","slug":"CVE-2026-89735","body":"## Overview\n\nA flaw was found in the Linux kernel's USB gadget MIDI2 driver. The driver fails to properly remove default configuration file system (configfs) groups during teardown, leading to a resource leak. A local attacker could exploit this vulnerability to cause memory exhaustion, potentially resulting in a denial of service (DoS) on the affected system.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · updated 2026-09-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89735.json)\n\n**kernel: usb: gadget: midi2: remove default configfs groups on teardown** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-21.\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":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":208957,"id":"CVE-2026-89735","ts":1790062299521,"field":"cvss","old":"4.4","new":"5.5"},{"seq":203963,"id":"CVE-2026-89735","ts":1789490230819,"field":"cvss","old":null,"new":"4.4"},{"seq":203962,"id":"CVE-2026-89735","ts":1789490230819,"field":"severity","old":"none","new":"medium"},{"seq":147267,"id":"CVE-2026-89735","ts":1789270205677,"field":"cvss","old":null,"new":"4.4"},{"seq":147266,"id":"CVE-2026-89735","ts":1789270205677,"field":"severity","old":"none","new":"medium"},{"seq":109020,"id":"CVE-2026-89735","ts":1789183729989,"field":"cvss","old":null,"new":"4.4"},{"seq":109019,"id":"CVE-2026-89735","ts":1789183729989,"field":"severity","old":"none","new":"medium"}]}