Deadlock in Linux kernel - CVE-2026-93214
Published: September 25, 2026
Vulnerability identifier: #VU152184
CSH Severity: Low
CVSS v4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-93214
CWE-ID: CWE-833
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper lock ordering in usbg_make_tpg() when performing configfs dependency operations across subsystems. A local user can trigger concurrent configfs operations to cause a denial of service.
Exploitation requires a circular lock dependency involving configfs_rmdir().
Affected software
Linux kernel
How to mitigate CVE-2026-93214
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
External References
- https://git.kernel.org/stable/c/3639438a4c83ffc2e564c8c010b92137c5d11cfa
- https://git.kernel.org/stable/c/6bcd9ee6ad6989d1d85a7459687e45b7ad7568d9
- https://git.kernel.org/stable/c/78a14ea2284825055ab6c2a1f3489510f560f3a2
- https://git.kernel.org/stable/c/9dbf74f4022f80f7669d2b3c22c5deb46c1b5674
- https://git.kernel.org/stable/c/abad5daa41cf5d0a0a9cba0397d3a0e7f11e0277
- https://git.kernel.org/stable/c/d90b0f90e30cd59b36005a4016b15cf02bcd7fb2
- https://git.kernel.org/stable/c/eef3e62f90d86c1c5651742f84ecc9db1814a893
- https://git.kernel.org/stable/c/f81a2da137b029a282b9bc64d2f267d242948659