{"id":"CVE-2026-93214","summary":"usb: gadget: f_tcm: fix deadlock in usbg_make_tpg()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_tcm: fix deadlock in usbg_make_tpg()\n\nusbg_make_tpg() held dep_lock while calling\nconfigfs_depend_item_unlocked(), which acquires the configfs root\ninode lock when operating across subsystems. This creates a circular\nlock dependency with configfs_rmdir():\n\n  dep_lock -\u003e configfs root inode lock -\u003e su_mutex -\u003e dep_lock\n\nIn usbg_make_tpg(), dep_lock only serialized the read of opts-\u003eready,\nwhich is a monotonic flag that transitions from false to true exactly\nonce (in tcm_set_name()) and never reverts. Remove dep_lock from\nusbg_make_tpg() entirely and use READ_ONCE/WRITE_ONCE to access\nopts-\u003eready locklessly instead.","modified":"2026-09-26T03:48:34.714364862Z","published":"2026-09-24T15:10:36.975Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93214.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/3639438a4c83ffc2e564c8c010b92137c5d11cfa"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6bcd9ee6ad6989d1d85a7459687e45b7ad7568d9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/78a14ea2284825055ab6c2a1f3489510f560f3a2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9dbf74f4022f80f7669d2b3c22c5deb46c1b5674"},{"type":"WEB","url":"https://git.kernel.org/stable/c/abad5daa41cf5d0a0a9cba0397d3a0e7f11e0277"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d90b0f90e30cd59b36005a4016b15cf02bcd7fb2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/eef3e62f90d86c1c5651742f84ecc9db1814a893"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f81a2da137b029a282b9bc64d2f267d242948659"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93214.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93214"},{"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":"4bb8548df632187d5db50878e71804af5f7c51ad"},{"fixed":"abad5daa41cf5d0a0a9cba0397d3a0e7f11e0277"},{"fixed":"3639438a4c83ffc2e564c8c010b92137c5d11cfa"},{"fixed":"78a14ea2284825055ab6c2a1f3489510f560f3a2"},{"fixed":"eef3e62f90d86c1c5651742f84ecc9db1814a893"},{"fixed":"f81a2da137b029a282b9bc64d2f267d242948659"},{"fixed":"6bcd9ee6ad6989d1d85a7459687e45b7ad7568d9"},{"fixed":"d90b0f90e30cd59b36005a4016b15cf02bcd7fb2"},{"fixed":"9dbf74f4022f80f7669d2b3c22c5deb46c1b5674"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93214.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.5.0"},{"fixed":"5.10.270"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.221"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.188"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.157"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.109"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.50"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93214.json"}}],"schema_version":"1.9.0"}