{"id":"CVE-2026-80829","title":"kernel: ALSA: usb-audio: fix OOB write in snd_usbmidi_novation_output() (CVE-2026-80829)","summary":"A flaw was found in the Linux kernel's ALSA USB audio driver. A local attacker with a specially crafted USB device could exploit this vulnerability. By providing a malformed `wMaxPacketSize` value, the device can trigger an out-of-bounds w…","severity":"medium","cvss":4.6,"cvssVector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":"CWE-787","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":"2026-09-04","updated":"2026-10-24","sourceUpdated":"2026-10-24T02:42:28+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80829.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80829.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-80829"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2528685"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80829"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80829"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80829.mbox"},{"url":"https://kernelcve.org/list/?q=CVE-2026-80829"},{"url":"https://git.kernel.org/stable/c/558fc4485ecc704edfe7876d6cebae4738ff7ef8"},{"url":"https://git.kernel.org/stable/c/9c8212436631b0063cb021e9f58df438e3db84d0"},{"url":"https://git.kernel.org/stable/c/e9c00d7533f99aa9833c4b598f47e3b3202fdb9a"},{"url":"https://git.kernel.org/stable/c/94e4562fcc81badd1d467ddfb88c27e4fae974c2"},{"url":"https://git.kernel.org/stable/c/7639ec9755d3ec0ec8cd7c0fdd2c3d3997434870"},{"url":"https://git.kernel.org/stable/c/91919b3b99ab7ce3d7dbb39fcf7c6c742a663c0c"},{"url":"https://git.kernel.org/stable/c/7f00dbddb51f4f74325cdc7c3f6b19fb3392481a"},{"url":"https://git.kernel.org/stable/c/1074c2306901b44ebcb83855583c6776e1e392ea"},{"url":"https://git.kernel.org/stable/c/1035a8f63bae28e498b0e7b5ac91d749844a7158"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00195,"epssPercentile":0.09134,"ingestedAt":"2026-10-19T09:16:01.502Z","slug":"CVE-2026-80829","body":"## Overview\n\nA flaw was found in the Linux kernel's ALSA USB audio driver. A local attacker with a specially crafted USB device could exploit this vulnerability. By providing a malformed `wMaxPacketSize` value, the device can trigger an out-of-bounds write in the kernel's memory. This memory corruption could lead to a system crash, resulting in a denial of service, or potentially allow for 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 2026-10-24 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80829.json)\n\n**kernel: ALSA: usb-audio: fix OOB write in snd_usbmidi_novation_output()** — rated Moderate by Red Hat. Released 2026-09-04, updated 2026-10-24.\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\n\nWorkarounds / mitigations:\n\n- Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.","depth":"sunlit","depthScore":25,"depthScoreParts":{"impact":25.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":228569,"id":"CVE-2026-80829","ts":1792844795032,"field":"cvss","old":null,"new":"4.6"},{"seq":228568,"id":"CVE-2026-80829","ts":1792844795032,"field":"severity","old":"none","new":"medium"}]}