{"id":"CVE-2026-90022","revision":"72d9cff688314287a2b3c308ef85d71c","records":[{"revision":"72d9cff688314287a2b3c308ef85d71c","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-90022","aliases":[],"title":"usb: gadget: f_midi2: fix use-after-free in string attribute show path","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.","state":0,"publishedAt":"2026-09-16T10:33:26.238+00:00","modifiedAt":"2026-10-19T08:56:35.79+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/usb/gadget/function/f_midi2.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"29ee7a4dddd5caa18d1cef000f20c6af43f762f1\",\n                            \"lessThan\": \"f9bdf4c4f6410a1dfafafa383a0e21069372657f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"29ee7a4dddd5caa18d1cef000f20c6af43f762f1\",\n                            \"lessThan\": \"d11f3300b39e2daad2f0d9d66ddcc39a156cb594\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"29ee7a4dddd5caa18d1cef000f20c6af43f762f1\",\n                            \"lessThan\": \"e89e30f0b5d3004fe5955250bd8b04f3733e32ce\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"29ee7a4dddd5caa18d1cef000f20c6af43f762f1\",\n                            \"lessThan\": \"49fab5e1bdb205c36c965d0e9677bc40d282d3a2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"29ee7a4dddd5caa18d1cef000f20c6af43f762f1\",\n                            \"lessThan\": \"fed0aa7c6eaedc6c0d4e362fc91724aa47be4a7b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/usb/gadget/function/f_midi2.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.6\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.110\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.51\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.5\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/f9bdf4c4f6410a1dfafafa383a0e21069372657f","https://git.kernel.org/stable/c/d11f3300b39e2daad2f0d9d66ddcc39a156cb594","https://git.kernel.org/stable/c/e89e30f0b5d3004fe5955250bd8b04f3733e32ce","https://git.kernel.org/stable/c/49fab5e1bdb205c36c965d0e9677bc40d282d3a2","https://git.kernel.org/stable/c/fed0aa7c6eaedc6c0d4e362fc91724aa47be4a7b"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-90022","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-90022","identifiers":["CVE-2026-90022"]},"retained":false,"historicalAffected":[]}],"coverage":[]}