Improper error handling in Linux kernel - CVE-2025-40106
Published: November 3, 2025
Vulnerability identifier: #VU117925
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-40106
CWE-ID: CWE-388
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper error handling within the comedi_buf_munge() function in drivers/comedi/comedi_buf.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2025-40106
Install update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/2670932f2465793fea1ef073e40883e8390fa4d9
- https://git.kernel.org/stable/c/4ffea48c69cb2b96a281cb7e5e42d706996631db
- https://git.kernel.org/stable/c/55520f65fd447e04099a2c44185453c18ea73b7e
- https://git.kernel.org/stable/c/6db19822512396be1a3e1e20c16c97270285ba1a
- https://git.kernel.org/stable/c/87b318ba81dda2ee7b603f4f6c55e78ec3e95974
- https://git.kernel.org/stable/c/8f3e4cd9be4b47246ea73ce5e3e0fa2f57f0d10c
- https://git.kernel.org/stable/c/a4bb5d1bc2f238461bcbe5303eb500466690bb2c
- https://git.kernel.org/stable/c/d4854eff25efb06d0d84c13e7129bbdba4125f8c