{"id":"CVE-2026-93214","published":"2026-09-24T16:17:16.397","lastModified":"2026-09-24T16:17:16.397","description":"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 -> configfs root inode lock -> su_mutex -> dep_lock\n\nIn usbg_make_tpg(), dep_lock only serialized the read of opts->ready,\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->ready locklessly instead.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/3639438a4c83ffc2e564c8c010b92137c5d11cfa","tags":[]},{"url":"https://git.kernel.org/stable/c/6bcd9ee6ad6989d1d85a7459687e45b7ad7568d9","tags":[]},{"url":"https://git.kernel.org/stable/c/78a14ea2284825055ab6c2a1f3489510f560f3a2","tags":[]},{"url":"https://git.kernel.org/stable/c/9dbf74f4022f80f7669d2b3c22c5deb46c1b5674","tags":[]},{"url":"https://git.kernel.org/stable/c/abad5daa41cf5d0a0a9cba0397d3a0e7f11e0277","tags":[]},{"url":"https://git.kernel.org/stable/c/d90b0f90e30cd59b36005a4016b15cf02bcd7fb2","tags":[]},{"url":"https://git.kernel.org/stable/c/eef3e62f90d86c1c5651742f84ecc9db1814a893","tags":[]},{"url":"https://git.kernel.org/stable/c/f81a2da137b029a282b9bc64d2f267d242948659","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}