{"id":"CVE-2026-90021","summary":"usb: gadget: f_midi: initialize work in f_midi_alloc()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_midi: initialize work in f_midi_alloc()\n\nf_midi_alloc initializes free_ref to 1 and it can only be incremented\nwhen a sound card is registered via f_midi_register_card().\nf_midi_register_card() is only called in f_midi_bind() which actually\nperforms INIT_WORK. If f_midi_bind() is never run, work is not\ninitialized and the if condition in f_midi_free becomes true,\nthis results in a warning later in __flush_work as work-\u003efunc = 0.\nFix this by moving INIT_WORK from f_midi_bind() to f_midi_alloc().","modified":"2026-11-13T04:07:10.943237585Z","published":"2026-09-16T10:33:25.560Z","related":["SUSE-SU-2026:24550-1","SUSE-SU-2026:24619-1","SUSE-SU-2026:24643-1","SUSE-SU-2026:24648-1","SUSE-SU-2026:24651-1","SUSE-SU-2026:24662-1","SUSE-SU-2026:5091-1","openSUSE-SU-2026:11880-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90021.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/02ac76f27db23ef652358458c272d9d2d6f51167"},{"type":"WEB","url":"https://git.kernel.org/stable/c/13e9f5a91360952b9b5bbc2367fc29d4a4ff2824"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3d8b11255e632170f32f1925bfcaf96331f36317"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7e07d3e4c389217d7d7171d80edf2e23ac70f1ea"},{"type":"WEB","url":"https://git.kernel.org/stable/c/858576de6b2f5166b08dae803f0fd0766dcb3002"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c76e82b026a28c348e5d841922aa73db36eca1d3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90021.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90021"},{"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":"8653d71ce3763aedcf3d2331f59beda3fecd79e4"},{"fixed":"c76e82b026a28c348e5d841922aa73db36eca1d3"},{"fixed":"13e9f5a91360952b9b5bbc2367fc29d4a4ff2824"},{"fixed":"3d8b11255e632170f32f1925bfcaf96331f36317"},{"fixed":"02ac76f27db23ef652358458c272d9d2d6f51167"},{"fixed":"858576de6b2f5166b08dae803f0fd0766dcb3002"},{"fixed":"7e07d3e4c389217d7d7171d80edf2e23ac70f1ea"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"89019ab7a64fcdf98a2ba7799e5c6aff58d4a05d"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"3635523e9b96213969693c320302d536774d8e9b"}]}],"versions":["v5.4.302","v5.4.301","v5.4.300","v5.4.299","v5.4.298","v5.4.297","v5.4.296","v5.4.295","v5.4.294","v5.4.293","v5.4.292","v5.4.291","v5.10.274","v5.10.273","v5.10.272","v5.10.271","v5.10.270","v5.10.269","v5.10.268","v5.10.267","v5.10.266","v5.10.265","v5.10.264","v5.10.263","v5.10.262","v5.10.261","v5.10.260","v5.10.259","v5.10.258","v5.10.257","v5.10.256","v5.10.255","v5.10.254","v5.10.253","v5.10.252","v5.10.251","v5.10.250","v5.10.249","v5.10.248","v5.10.247","v5.10.246","v5.10.245","v5.10.244","v5.10.243","v5.10.242","v5.10.241","v5.10.240","v5.10.239","v5.10.238","v5.10.237","v5.10.236","v5.10.235"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-90021.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.4.291"},{"fixed":"5.5"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.10.235"},{"fixed":"5.11"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.12.0"},{"fixed":"6.1.191"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.160"}]},{"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/osv-test-cve-osv-conversion/osv-output/CVE-2026-90021.json"}}],"schema_version":"1.9.2"}