#VU117660 Input validation error in Linux kernel - CVE-2025-40019
Published: October 26, 2025 / Updated: January 16, 2026
Vulnerability identifier: #VU117660
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:P/U:Clear
CVE-ID: CVE-2025-40019
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
Public exploit is 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 input validation within the essiv_aead_crypt() function in crypto/essiv.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/248ff2797ff52a8cbf86507f9583437443bf7685
- https://git.kernel.org/stable/c/6bb73db6948c2de23e407fe1b7ef94bf02b7529f
- https://git.kernel.org/stable/c/da7afb01ba05577ba3629f7f4824205550644986
- https://git.kernel.org/stable/c/dc4c854a5e7453c465fa73b153eba4ef2a240abe
- https://git.kernel.org/stable/c/df58651968f82344a0ed2afdafd20ecfc55ff548
- https://git.kernel.org/stable/c/f37e7860dc5e94c70b4a3e38a5809181310ea9ac