usb: gadget: f_tcm: fix deadlock in usbg_make_tpg()
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_tcm: fix deadlock in usbg_make_tpg() usbg_make_tpg() held dep_lock while calling configfs_depend_item_unlocked(), which acquires the configfs root inode lock when operating across subsystems. This creates a circular lock dependency with configfs_rmdir(): dep_lock -> configfs root inode lock -> su_mutex -> dep_lock In usbg_make_tpg(), dep_lock only serialized the read of opts->ready, which is a monotonic flag that transitions from false to true exactly once (in tcm_set_name()) and never reverts. Remove dep_lock from usbg_make_tpg() entirely and use READ_ONCE/WRITE_ONCE to access opts->ready locklessly instead.
CVE-2026-93214
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-93214
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4bb8548df632187d5db50878e71804af5f7c51ad",
"lessThan": "abad5daa41cf5d0a0a9cba0397d3a0e7f11e0277",
"versionType": "git"
},
{
"status": "affected",
"version": "4bb8548df632187d5db50878e71804af5f7c51ad",
"lessThan": "3639438a4c83ffc2e564c8c010b92137c5d11cfa",
"versionType": "git"
},
{
"status": "affected",
"version": "4bb8548df632187d5db50878e71804af5f7c51ad",
"lessThan": "78a14ea2284825055ab6c2a1f3489510f560f3a2",
"versionType": "git"
},
{
"status": "affected",
"version": "4bb8548df632187d5db50878e71804af5f7c51ad",
"lessThan": "eef3e62f90d86c1c5651742f84ecc9db1814a893",
"versionType": "git"
},
{
"status": "affected",
"version": "4bb8548df632187d5db50878e71804af5f7c51ad",
"lessThan": "f81a2da137b029a282b9bc64d2f267d242948659",
"versionType": "git"
},
{
"status": "affected",
"version": "4bb8548df632187d5db50878e71804af5f7c51ad",
"lessThan": "6bcd9ee6ad6989d1d85a7459687e45b7ad7568d9",
"versionType": "git"
},
{
"status": "affected",
"version": "4bb8548df632187d5db50878e71804af5f7c51ad",
"lessThan": "d90b0f90e30cd59b36005a4016b15cf02bcd7fb2",
"versionType": "git"
},
{
"status": "affected",
"version": "4bb8548df632187d5db50878e71804af5f7c51ad",
"lessThan": "9dbf74f4022f80f7669d2b3c22c5deb46c1b5674",
"versionType": "git"
}
],
"programFiles": [
"drivers/usb/gadget/function/f_tcm.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.5"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.5",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.270",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.221",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.109",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.50",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.4",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/usb/gadget/function/f_tcm.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-93214
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #37917 · Revision 1
- Added to Heist Feed
- Publisher date