{"id":"CVE-2026-90022","title":"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->…","summary":"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->…","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","vendor":"Linux","product":"Linux","affected":["Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < f9bdf4c4f6410a1dfafafa383a0e21069372657f","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d11f3300b39e2daad2f0d9d66ddcc39a156cb594","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < e89e30f0b5d3004fe5955250bd8b04f3733e32ce","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 49fab5e1bdb205c36c965d0e9677bc40d282d3a2","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < fed0aa7c6eaedc6c0d4e362fc91724aa47be4a7b","Linux < 6.6.157","Linux < 6.12.110","Linux < 6.18.51","Linux < 7.2.5","Linux (all versions)"],"published":"2026-09-16","updated":"2026-09-17","sourceUpdated":"2026-09-17T10:17:05.910","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90022","references":[{"url":"https://git.kernel.org/stable/c/49fab5e1bdb205c36c965d0e9677bc40d282d3a2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d11f3300b39e2daad2f0d9d66ddcc39a156cb594","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e89e30f0b5d3004fe5955250bd8b04f3733e32ce","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f9bdf4c4f6410a1dfafafa383a0e21069372657f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fed0aa7c6eaedc6c0d4e362fc91724aa47be4a7b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-16T10:53:53.937Z","epss":0.00159,"epssPercentile":0.05445,"slug":"CVE-2026-90022","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":205019,"id":"CVE-2026-90022","ts":1789570703943,"field":"cvss","old":null,"new":"7.8"},{"seq":205018,"id":"CVE-2026-90022","ts":1789570703943,"field":"severity","old":"none","new":"high"}]}