#VU115778 Use-after-free in Linux kernel - CVE-2023-53358
Published: September 18, 2025 / Updated: September 22, 2025
Vulnerability identifier: #VU115778
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-53358
CWE-ID: CWE-416
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 escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the smb2_tree_disconnect() function in fs/ksmbd/smb2pdu.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/30210947a343b6b3ca13adc9bfc88e1543e16dd5
- https://git.kernel.org/stable/c/39366b47a59d46af15ac57beb0996268bf911f6a
- https://git.kernel.org/stable/c/b36295c17fb97424406f0c3ab321b1ccaabb9be8
- https://git.kernel.org/stable/c/bd80d35725a0cf4df9307bfe2f1a3b2cb983d8e6
- https://git.kernel.org/stable/c/dc1c17716c099c90948ebb83e2170dd75a3be6b6
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.15