{"id":"CVE-2026-93214","revision":"cb17473adb38458f83926f1d81a4ca58","records":[{"revision":"cb17473adb38458f83926f1d81a4ca58","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-93214","aliases":[],"title":"usb: gadget: f_tcm: fix deadlock in usbg_make_tpg()","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.","state":0,"publishedAt":"2026-09-24T15:10:36.975+00:00","modifiedAt":"2026-10-19T09:07:26.196+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_tcm.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4bb8548df632187d5db50878e71804af5f7c51ad\",\n                            \"lessThan\": \"abad5daa41cf5d0a0a9cba0397d3a0e7f11e0277\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4bb8548df632187d5db50878e71804af5f7c51ad\",\n                            \"lessThan\": \"3639438a4c83ffc2e564c8c010b92137c5d11cfa\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4bb8548df632187d5db50878e71804af5f7c51ad\",\n                            \"lessThan\": \"78a14ea2284825055ab6c2a1f3489510f560f3a2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4bb8548df632187d5db50878e71804af5f7c51ad\",\n                            \"lessThan\": \"eef3e62f90d86c1c5651742f84ecc9db1814a893\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4bb8548df632187d5db50878e71804af5f7c51ad\",\n                            \"lessThan\": \"f81a2da137b029a282b9bc64d2f267d242948659\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4bb8548df632187d5db50878e71804af5f7c51ad\",\n                            \"lessThan\": \"6bcd9ee6ad6989d1d85a7459687e45b7ad7568d9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4bb8548df632187d5db50878e71804af5f7c51ad\",\n                            \"lessThan\": \"d90b0f90e30cd59b36005a4016b15cf02bcd7fb2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4bb8548df632187d5db50878e71804af5f7c51ad\",\n                            \"lessThan\": \"9dbf74f4022f80f7669d2b3c22c5deb46c1b5674\",\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_tcm.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.5\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.5\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.270\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.221\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\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\": \"6.12.109\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.50\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\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":[],"references":["https://git.kernel.org/stable/c/abad5daa41cf5d0a0a9cba0397d3a0e7f11e0277","https://git.kernel.org/stable/c/3639438a4c83ffc2e564c8c010b92137c5d11cfa","https://git.kernel.org/stable/c/78a14ea2284825055ab6c2a1f3489510f560f3a2","https://git.kernel.org/stable/c/eef3e62f90d86c1c5651742f84ecc9db1814a893","https://git.kernel.org/stable/c/f81a2da137b029a282b9bc64d2f267d242948659","https://git.kernel.org/stable/c/6bcd9ee6ad6989d1d85a7459687e45b7ad7568d9","https://git.kernel.org/stable/c/d90b0f90e30cd59b36005a4016b15cf02bcd7fb2","https://git.kernel.org/stable/c/9dbf74f4022f80f7669d2b3c22c5deb46c1b5674"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-93214","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-93214","identifiers":["CVE-2026-93214"]},"retained":false,"historicalAffected":[]}],"coverage":[]}