{"id":"CVE-2026-90022","summary":"usb: gadget: f_midi2: fix use-after-free in string attribute show path","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_midi2: fix use-after-free in string attribute show path\n\nf_midi2_opts_str_show() takes the string lock internally, but its\ncallers dereference the opts-\u003einfo.\u003cfield\u003e pointer before calling it,\noutside the lock. This races with f_midi2_opts_str_store(), which\nfrees the old string under opts-\u003elock when the attribute is written\nconcurrently, the show path can read a pointer that gets freed\nbefore the lock inside str_show() is even taken.\n\nChange f_midi2_opts_str_show() to take a pointer to the string field,\nmatching the existing pattern in f_midi2_opts_str_store(), and\ndereference it only after the lock is held. Update all three callers\n(iface_name, block name, and the EP string option macro) accordingly.","modified":"2026-09-19T03:30:20.820240229Z","published":"2026-09-16T10:33:26.238Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90022.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/49fab5e1bdb205c36c965d0e9677bc40d282d3a2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d11f3300b39e2daad2f0d9d66ddcc39a156cb594"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e89e30f0b5d3004fe5955250bd8b04f3733e32ce"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f9bdf4c4f6410a1dfafafa383a0e21069372657f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fed0aa7c6eaedc6c0d4e362fc91724aa47be4a7b"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90022.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90022"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"29ee7a4dddd5caa18d1cef000f20c6af43f762f1"},{"fixed":"f9bdf4c4f6410a1dfafafa383a0e21069372657f"},{"fixed":"d11f3300b39e2daad2f0d9d66ddcc39a156cb594"},{"fixed":"e89e30f0b5d3004fe5955250bd8b04f3733e32ce"},{"fixed":"49fab5e1bdb205c36c965d0e9677bc40d282d3a2"},{"fixed":"fed0aa7c6eaedc6c0d4e362fc91724aa47be4a7b"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90022.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.6.0"},{"fixed":"6.6.157"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.110"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.51"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90022.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}