{"id":"CVE-2026-80969","title":"kernel: ALSA: mpu401: Check card index validity at probe (CVE-2026-80969)","summary":"A flaw was found in the Linux kernel's ALSA mpu401 driver. The driver fails to validate the card index when a device is manually bound through the sysfs interface. This oversight can lead to an out-of-bounds memory access. A local attacker…","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-125","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":"2026-09-14T18:25:24+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80969.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80969.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-80969"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532468"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80969"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80969"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80969.mbox"},{"url":"https://git.kernel.org/stable/c/4a3d6c22ca6b6c16e8055fb518aa87f5e043f754"},{"url":"https://git.kernel.org/stable/c/d606c703d1e0c54996cb3db76a753157cb2a3c06"},{"url":"https://git.kernel.org/stable/c/3a997371ac2957f11a033a4cec2930042dadb7e3"},{"url":"https://git.kernel.org/stable/c/26a25fb4ef4ba2a33069d489feb75a4c36899cca"},{"url":"https://git.kernel.org/stable/c/76b6bc38d0f310c0ae1b2a2ebabe2947d92c601a"},{"url":"https://git.kernel.org/stable/c/cc4215cc2a4b2a9cf8b1952bbe8d5bf925acb3ea"},{"url":"https://git.kernel.org/stable/c/8adda66edf795d4648f8e26f312e4414c535d25a"},{"url":"https://git.kernel.org/stable/c/f7dcecb92ed192ff5fcf842918fb1aaea84b5bdd"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.0021,"epssPercentile":0.11545,"ingestedAt":"2026-09-14T15:23:07.455Z","slug":"CVE-2026-80969","body":"## Overview\n\nA flaw was found in the Linux kernel's ALSA mpu401 driver. The driver fails to validate the card index when a device is manually bound through the sysfs interface. This oversight can lead to an out-of-bounds memory access. A local attacker with appropriate permissions could exploit this vulnerability to cause a denial of service or potentially achieve privilege escalation.\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-2026-80969.json)\n\n**kernel: ALSA: mpu401: Check card index validity at probe** — 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":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":204215,"id":"CVE-2026-80969","ts":1789490240214,"field":"cvss","old":null,"new":"5.5"},{"seq":204214,"id":"CVE-2026-80969","ts":1789490240214,"field":"severity","old":"none","new":"medium"},{"seq":147149,"id":"CVE-2026-80969","ts":1789270197079,"field":"cvss","old":null,"new":"4.1"},{"seq":147148,"id":"CVE-2026-80969","ts":1789270197079,"field":"severity","old":"none","new":"medium"},{"seq":108900,"id":"CVE-2026-80969","ts":1789183729463,"field":"cvss","old":null,"new":"4.1"},{"seq":108899,"id":"CVE-2026-80969","ts":1789183729463,"field":"severity","old":"none","new":"medium"}]}