CVE-2025-38724

CVE Details

Release Date:	2025-09-04
Impact:	Important	What is this?

Description

In the Linux kernel, the following vulnerability has been resolved: nfsd: handle get_client_locked() failure in nfsd4_setclientid_confirm() Lei Lu recently reported that nfsd4_setclientid_confirm() did not check the return value from get_client_locked(). a SETCLIENTID_CONFIRM could race with a confirmed client expiring and fail to get a reference. That could later lead to a UAF. Fix this by getting a reference early in the case where there is an extant confirmed client. If that fails then treat it as if there were no confirmed client found at all. In the case where the unconfirmed client is expiring, just fail and return the result from get_client_locked().

See more information about CVE-2025-38724 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	7.5
Vector String:	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Version:	3.1
Attack Vector:	Network
Attack Complexity:	High
Privileges Required:	Low
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	High
Integrity Impact:	High
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 10 (kernel-uek)	ELSA-2025-20649	2025-10-06
Oracle Linux version 10 (kernel-uek)	ELSA-2025-20662	2025-10-14
Oracle Linux version 7 (kernel-uek)	ELSA-2025-20650	2025-10-06
Oracle Linux version 7 (kernel-uek)	ELSA-2025-20663	2025-10-11
Oracle Linux version 8 (kernel-uek)	ELSA-2025-20650	2025-10-06
Oracle Linux version 8 (kernel-uek)	ELSA-2025-20663	2025-10-11
Oracle Linux version 8 (kernel-uek)	ELSA-2025-20721	2025-10-24
Oracle Linux version 9 (kernel-uek)	ELSA-2025-20649	2025-10-06
Oracle Linux version 9 (kernel-uek)	ELSA-2025-20662	2025-10-14
Oracle Linux version 9 (kernel-uek)	ELSA-2025-20721	2025-10-24