#VU114901 Memory leak in Linux kernel - CVE-2025-39720

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Main Vulnerability Database Vulnerabilities #VU114901

#VU114901 Memory leak in Linux kernel - CVE-2025-39720

Published: September 8, 2025


Vulnerability identifier: #VU114901
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-2025-39720
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
Linux kernel
Software vendor:
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 smb_send_parent_lease_break_noti(), smb_lazy_parent_lease_break_close() and smb_break_all_levII_oplock() functions in fs/smb/server/oplock.c. A local user can perform a denial of service (DoS) attack.


Remediation

Install update from vendor's repository.

External links