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CVE-2025-38724 is a use-after-free vulnerability in the Linux kernel NFS server subsystem. The nfsd4_setclientid_confirm() function failed to check the return value of get_client_locked(). A SETCLIENTID_CONFIRM operation racing with expiration of a confirmed client can fail to acquire a client reference, allowing subsequent access to freed memory. The issue was introduced in Linux 3.17 and can potentially cause denial of service or arbitrary code execution in kernel context.
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A race condition in the Linux kernel's NFS server can cause a use-after-free when nfsd4_setclientid_confirm() fails to check whether get_client_locked() successfully obtained a client reference. The reference assigns a CVSS v3 base score of 7.8, with local access and low privileges required and potentially high confidentiality, integrity, and availability impacts. The listed remediation is to update sys-kernel/csql-kernel-6_12 and related packages to version 19216.0.53 or later.
A Linux kernel NFS server race condition can cause a use-after-free when nfsd4_setclientid_confirm() fails to check whether get_client_locked() successfully obtained a client reference. The reference assigns a CVSS v3 base score of 7.8, with potential high impacts on confidentiality, integrity, and availability.
A vulnerability covered by an Ubuntu Linux kernel security check. Its supplied CVSS vector indicates local exploitation requiring low privileges, no user interaction, and high confidentiality, integrity, and availability impacts. The content does not describe the underlying flaw.
A high-severity local Ubuntu Linux kernel vulnerability covered by Ubuntu Security Notice USN-8851-1. Successful exploitation requires local authenticated privileges and can result in high confidentiality, integrity, and availability impact.
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