Out-of-bounds read in Linux kernel - CVE-2026-93120
Published: September 18, 2026
Vulnerability identifier: #VU150889
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-93120
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in os_desc_qw_sign_show() in the USB gadget configfs implementation when converting a stored signature from UTF-16 to UTF-8. A local user can store a signature that fills the buffer without a NUL terminator and read the configfs attribute to disclose sensitive information.
Affected software
Linux kernel
How to mitigate CVE-2026-93120
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
External References
- https://git.kernel.org/stable/c/36315a330e067f7773196940552feacb1debbef1
- https://git.kernel.org/stable/c/7e94cb967778e074411940db4db97f22ed77560c
- https://git.kernel.org/stable/c/9b45125501aad2dff7730970461b455b0e0658ee
- https://git.kernel.org/stable/c/a28c486434634f6d1e120711d2b09f3eddea6c98
- https://git.kernel.org/stable/c/afbf39c0f2297c6abef6d670a82a2079b0836191
- https://git.kernel.org/stable/c/b895dbed8ac9e12a5ffa1a2165575a8469f8340d
- https://git.kernel.org/stable/c/f63edb54d8f738f9c21e2068c777ae1c097df6b7
- https://git.kernel.org/stable/c/f6da500b0f8106882598b6dec87fe37d653946cf