#VU119338 NULL pointer dereference in Linux kernel - CVE-2025-40290
Published: December 8, 2025
Vulnerability identifier: #VU119338
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-2025-40290
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 xsk_cq_reserve_locked(), xsk_cq_cancel_locked(), xsk_destruct_skb(), xsk_build_skb_zerocopy(), xsk_build_skb() and xsk_init() functions in net/xdp/xsk.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's repository.