CVE-2025-38023
kernel: Kernel: Denial of Service via NULL pointer dereference in NFS unlock path
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · June 18, 2025
Updated · June 30, 2026
Description
A flaw was found in the Linux kernel's Network File System (NFS) component. When the system experiences insufficient memory during an unlock operation, a memory allocation failure can occur. This can lead to an invalid memory address being used, triggering a NULL pointer dereference. A local attacker could potentially exploit this to cause a system crash, resulting in a Denial of Service (DoS).
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-390 · Detection of Error Condition Without Action