#VU116490 Memory leak in Linux kernel - CVE-2023-53568
Published: October 4, 2025 / Updated: October 27, 2025
Vulnerability identifier: #VU116490
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-2023-53568
CWE-ID: CWE-401
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 memory leak within the zcdn_create() function in drivers/s390/crypto/zcrypt_api.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/0878052579cb2773caee64812a811edcab6b5a55
- https://git.kernel.org/stable/c/131cd74a8e38d75239f2c81dfee53d6554eb8bf8
- https://git.kernel.org/stable/c/147d8da33a2c2195ec63acd56cd7d80a3458c253
- https://git.kernel.org/stable/c/174f11ef1615ec3ab1e2189685864433c0d855a2
- https://git.kernel.org/stable/c/6252f47b78031979ad919f971dc8468b893488bd
- https://git.kernel.org/stable/c/6b0cb9c055843777b374309503d89eabeb769355
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.257