#VU120361 Memory leak in Linux kernel - CVE-2023-53993
Published: December 26, 2025 / Updated: December 31, 2025
Vulnerability identifier: #VU120361
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-2023-53993
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 signal_task_complete() function in drivers/pci/doe.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/2a0e0f4773fe8032fb17e56f897bee32ce3cdc2b
- https://git.kernel.org/stable/c/95628b830952943631d3d74f73f431f501c5d6f5
- https://git.kernel.org/stable/c/abf04be0e7071f2bcd39bf97ba407e7d4439785e
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.24
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.11
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3