{"id":"CVE-2026-98741","title":"kernel: ALSA: ua101: reject mismatched capture/playback packet sizes (CVE-2026-98741)","summary":"A flaw was found in the Linux kernel's ALSA (Advanced Linux Sound Architecture) UA-101 USB audio driver. The driver does not validate that packet sizes and channel numbers match between capture and playback endpoints during device initiali…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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":"2026-10-18","updated":"2026-10-23","sourceUpdated":"2026-10-23T02:11:43+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98741.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98741.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98741"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2555081"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98741"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98741"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98741.mbox"},{"url":"https://git.kernel.org/stable/c/ada5ded765f059a6e3036e69ca350449442af0fc"},{"url":"https://git.kernel.org/stable/c/fd3a7bf0d988b0878a1957df150edb35f81db87e"},{"url":"https://git.kernel.org/stable/c/eb0c7fda59cf650076f8ed5b949a6c8441aa3606"},{"url":"https://git.kernel.org/stable/c/4294fe57048594a9e158b61c967bb7f943cda477"},{"url":"https://git.kernel.org/stable/c/86f86e6fdedc33c5b8d38b9208b350f8accf57ee"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00168,"epssPercentile":0.05983,"ingestedAt":"2026-10-18T16:47:32.502Z","slug":"CVE-2026-98741","body":"## Overview\n\nA flaw was found in the Linux kernel's ALSA (Advanced Linux Sound Architecture) UA-101 USB audio driver. The driver does not validate that packet sizes and channel numbers match between capture and playback endpoints during device initialization. An attacker who connects a specially crafted USB device can trigger an out-of-bounds memory write past the playback buffer. This vulnerability can lead to a denial of service (DoS) through a kernel crash or potentially allow arbitrary code execution with kernel privileges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · 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 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-10-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98741.json)\n\n**kernel: ALSA: ua101: reject mismatched capture/playback packet sizes** — rated Important 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 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 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\nAffected","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":228216,"id":"CVE-2026-98741","ts":1792758199016,"field":"cvss","old":null,"new":"7.8"},{"seq":228215,"id":"CVE-2026-98741","ts":1792758199016,"field":"severity","old":"none","new":"high"}]}