{"id":"CVE-2026-98769","title":"kernel: usb: gadget: f_uac1_legacy: validate bRequest index in generic_{set,get}_cmd (CVE-2026-98769)","summary":"A flaw was found in the Linux kernel's Universal Serial Bus (USB) audio gadget driver. A connected USB host can send a specially crafted audio control request with an invalid command index, causing an out-of-bounds heap memory read and wri…","severity":"high","cvss":8.4,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssSource":"vendor","cwe":"CWE-787","vendor":"Red Hat","product":"Linux","affected":["Linux >= c47d7b09891abb4f8b222317c89c7469bed8db3a < da841c1511a6160b8bc6bb7b7c6d4c9fb76fb51e","Linux >= c47d7b09891abb4f8b222317c89c7469bed8db3a < 36f3f009049bc91e14dc856007932473318d12f8","Linux >= c47d7b09891abb4f8b222317c89c7469bed8db3a < 8c611876c002d712ae5f246af5188432c708f79d","Linux >= c47d7b09891abb4f8b222317c89c7469bed8db3a < 697cfe6e53b66cda196d6f8833b0ee97fefd0a8a","Linux >= c47d7b09891abb4f8b222317c89c7469bed8db3a < 9062d50e75c24dc7911be05c9b1719b3b256af15","Linux 2.6.31"],"published":"2026-10-18","updated":"2026-10-23","sourceUpdated":"2026-10-23T06:41:05+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98769.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98769.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98769"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2555063"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98769"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98769"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98769.mbox"},{"url":"https://git.kernel.org/stable/c/da841c1511a6160b8bc6bb7b7c6d4c9fb76fb51e"},{"url":"https://git.kernel.org/stable/c/36f3f009049bc91e14dc856007932473318d12f8"},{"url":"https://git.kernel.org/stable/c/8c611876c002d712ae5f246af5188432c708f79d"},{"url":"https://git.kernel.org/stable/c/697cfe6e53b66cda196d6f8833b0ee97fefd0a8a"},{"url":"https://git.kernel.org/stable/c/9062d50e75c24dc7911be05c9b1719b3b256af15"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00168,"epssPercentile":0.05981,"ingestedAt":"2026-10-18T16:47:32.493Z","slug":"CVE-2026-98769","body":"## Overview\n\nA flaw was found in the Linux kernel's Universal Serial Bus (USB) audio gadget driver. A connected USB host can send a specially crafted audio control request with an invalid command index, causing an out-of-bounds heap memory read and write. This flaw primarily allows an attacker to cause a Denial of Service (DoS) via a system crash, or potentially lead to kernel memory corruption.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · updated 2026-10-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98769.json)\n\n**kernel: usb: gadget: f_uac1_legacy: validate bRequest index in generic_{set,get}_cmd** — rated Important by Red Hat. Released 2026-10-18, updated 2026-10-23.\n\nNot affected:\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\nRefer to the advisory for fix availability.","depth":"twilight","depthScore":46,"depthScoreParts":{"impact":46.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":228143,"id":"CVE-2026-98769","ts":1792758130608,"field":"cvss","old":null,"new":"8.4"},{"seq":228142,"id":"CVE-2026-98769","ts":1792758130608,"field":"severity","old":"none","new":"high"}]}