#VU119193 Improper locking in Linux kernel - CVE-2025-40219
Published: December 4, 2025
Vulnerability identifier: #VU119193
Vulnerability risk: Low
CVSSv4.0: 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-2025-40219
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the sriov_add_vfs() and sriov_del_vfs() functions in drivers/pci/iov.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/05703271c3cdcc0f2a8cf6ebdc45892b8ca83520
- https://git.kernel.org/stable/c/1e8a80290f964bdbad225221c8a1594c7e01c8fd
- https://git.kernel.org/stable/c/36039348bca77828bf06eae41b8f76e38cd15847
- https://git.kernel.org/stable/c/53154cd40ccf285f1d1c24367824082061d155bd
- https://git.kernel.org/stable/c/5c1cd7d405e94dc6cb320cc0cc092b74895b6ddf
- https://git.kernel.org/stable/c/a24219172456f035d886857e265ca24c85b167c8
- https://git.kernel.org/stable/c/a645ca21de09e3137cbb224fa6c23cca873a1d01
- https://git.kernel.org/stable/c/ee40e5db052d7c6f406fdb95ad639c894c74674c