{"id":"CVE-2026-98836","title":"kernel: ALSA: line6: reject oversized playback packets (CVE-2026-98836)","summary":"A flaw was found in the Linux kernel's ALSA (Advanced Linux Sound Architecture) Line 6 USB audio driver. The driver fails to validate the size of playback packets against the allocated memory buffer slice when handling asymmetrical audio c…","severity":"medium","cvss":6.2,"cvssVector":"CVSS:3.1/AV:L/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 7","enterprise_linux 8","enterprise_linux 9","openshift_container_platform 4"],"published":"2026-10-18","updated":"2026-10-23","sourceUpdated":"2026-10-23T21:44:53+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98836.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98836.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98836"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2555225"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98836"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98836"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98836.mbox"},{"url":"https://git.kernel.org/stable/c/933d8ac23388eb208ea195231d682dce0bec86ca"},{"url":"https://git.kernel.org/stable/c/a84371be89c39ccc46c7af8b9eb15c448df9265f"},{"url":"https://git.kernel.org/stable/c/3f75da1e4ee699f6650d23d6897cf443b01856c7"},{"url":"https://git.kernel.org/stable/c/b78748424f29f07d310484b2b36afdececa74389"},{"url":"https://git.kernel.org/stable/c/61b0a5a114fa4552892da5c0ff2f42e63bf08c6b"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00168,"epssPercentile":0.05972,"ingestedAt":"2026-10-18T16:47:32.468Z","slug":"CVE-2026-98836","body":"## Overview\n\nA flaw was found in the Linux kernel's ALSA (Advanced Linux Sound Architecture) Line 6 USB audio driver. The driver fails to validate the size of playback packets against the allocated memory buffer slice when handling asymmetrical audio configurations. An attacker capable of connecting a crafted USB device could exploit this vulnerability to cause an out-of-bounds memory write. This issue can lead to kernel memory corruption or a system crash, resulting in a Denial of Service (DoS).\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · 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 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, … · updated 2026-10-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98836.json)\n\n**kernel: ALSA: line6: reject oversized playback packets** — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-23.\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\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\nNot affected:\n\n- Red Hat Enterprise Linux 6\n\n## Remediation\n\nFix deferred","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":34.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":228622,"id":"CVE-2026-98836","ts":1792844817221,"field":"cvss","old":null,"new":"6.2"},{"seq":228621,"id":"CVE-2026-98836","ts":1792844817221,"field":"severity","old":"none","new":"medium"}]}