#VU114922 NULL pointer dereference in Linux kernel - CVE-2025-39723
Published: September 8, 2025
Vulnerability identifier: #VU114922
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-2025-39723
CWE-ID: CWE-476
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 NULL pointer dereference within the iter_file_splice_write() function in fs/splice.c, within the netfs_create_write_req() function in fs/netfs/write_issue.c, within the netfs_write_collection() function in fs/netfs/write_collect.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's repository.