{"id":"CVE-2026-90022","published":"2026-09-16T11:17:15.140","lastModified":"2026-09-17T10:17:05.910","description":"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->info.<field> pointer before calling it,\noutside the lock. This races with f_midi2_opts_str_store(), which\nfrees the old string under opts->lock 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.","cvssScore":7.8,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/49fab5e1bdb205c36c965d0e9677bc40d282d3a2","tags":[]},{"url":"https://git.kernel.org/stable/c/d11f3300b39e2daad2f0d9d66ddcc39a156cb594","tags":[]},{"url":"https://git.kernel.org/stable/c/e89e30f0b5d3004fe5955250bd8b04f3733e32ce","tags":[]},{"url":"https://git.kernel.org/stable/c/f9bdf4c4f6410a1dfafafa383a0e21069372657f","tags":[]},{"url":"https://git.kernel.org/stable/c/fed0aa7c6eaedc6c0d4e362fc91724aa47be4a7b","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}