{"id":"CVE-2026-80971","title":"kernel: ALSA: bcd2000: clear the URB pointers on disconnect (CVE-2026-80971)","summary":"A flaw was found in the ALSA bcd2000 driver of the Linux kernel. When a USB device using this driver is disconnected while a rawmidi substream is still active, the driver fails to clear the Universal Serial Bus Request Block (URB) pointers…","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 6","enterprise_linux 7","enterprise_linux 8","enterprise_linux 9","openshift_container_platform 4"],"published":"2026-09-11","updated":"2026-09-14","sourceUpdated":"2026-09-14T18:26:21+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80971.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80971.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-80971"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532082"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80971"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80971"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80971.mbox"},{"url":"https://git.kernel.org/stable/c/9af08677aa57debaca5b57c8045c52a83d3dd376"},{"url":"https://git.kernel.org/stable/c/5a77febac6faf6da40fbb4555f703eeb91b58130"},{"url":"https://git.kernel.org/stable/c/3c00004f134fc819f9d9e202c6a64acde0a1f8d0"},{"url":"https://git.kernel.org/stable/c/6c07aad8a7c9ef8ebc4d03a964b882123a349a2e"},{"url":"https://git.kernel.org/stable/c/eb482a06791d6168beb8c78cc904ac5a5ed96a55"},{"url":"https://git.kernel.org/stable/c/7df3194bdb7479cad9199889655a566a2c0c1d1b"},{"url":"https://git.kernel.org/stable/c/b06ebc7fe25a6af4a9f6e4a3d4236a4178ad4b01"},{"url":"https://git.kernel.org/stable/c/459d3a64766f5ca2f1886daeaf24582831a5f5ab"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00159,"epssPercentile":0.05506,"scores":{"vendor":7,"cna":7.8},"ingestedAt":"2026-09-14T15:23:07.455Z","slug":"CVE-2026-80971","body":"## Overview\n\nA flaw was found in the ALSA bcd2000 driver of the Linux kernel. When a USB device using this driver is disconnected while a rawmidi substream is still active, the driver fails to clear the Universal Serial Bus Request Block (URB) pointers. This oversight allows a local attacker to trigger a use-after-free vulnerability, leading to memory corruption. This can result in a denial of service or potentially arbitrary code execution.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80971.json)\n\n**kernel: ALSA: bcd2000: clear the URB pointers on disconnect** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-14.\n\nAffected:\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\nNo fix planned:\n\n- Red Hat Enterprise Linux 6\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\nOut of support scope","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":38.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":204195,"id":"CVE-2026-80971","ts":1789490240107,"field":"cvss","old":"7.8","new":"7"},{"seq":183600,"id":"CVE-2026-80971","ts":1789356676053,"field":"cvss","old":"7.8","new":"4.4"},{"seq":183599,"id":"CVE-2026-80971","ts":1789356676053,"field":"severity","old":"high","new":"medium"},{"seq":153152,"id":"CVE-2026-80971","ts":1789285349306,"field":"cvss","old":null,"new":"7.8"},{"seq":153151,"id":"CVE-2026-80971","ts":1789285349306,"field":"severity","old":"none","new":"high"},{"seq":109580,"id":"CVE-2026-80971","ts":1789183732495,"field":"cvss","old":null,"new":"4.4"},{"seq":109579,"id":"CVE-2026-80971","ts":1789183732495,"field":"severity","old":"none","new":"medium"}]}