Bug 2360224 (CVE-2025-22026)

Summary:	CVE-2025-22026 kernel: nfsd: don't ignore the return code of svc_proc_register()
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	dfreiber, drow, jburrell, vkumar
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
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Regression:	---	Mount Type:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2025-04-16 15:03:27 UTC

In the Linux kernel, the following vulnerability has been resolved:

nfsd: don't ignore the return code of svc_proc_register()

Currently, nfsd_proc_stat_init() ignores the return value of
svc_proc_register(). If the procfile creation fails, then the kernel
will WARN when it tries to remove the entry later.

Fix nfsd_proc_stat_init() to return the same type of pointer as
svc_proc_register(), and fix up nfsd_net_init() to check that and fail
the nfsd_net construction if it occurs.

svc_proc_register() can fail if the dentry can't be allocated, or if an
identical dentry already exists. The second case is pretty unlikely in
the nfsd_net construction codepath, so if this happens, return -ENOMEM.

Comment 1 Avinash Hanwate 2025-04-17 13:06:55 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025041654-CVE-2025-22026-f6be@gregkh/T

Comment 2 errata-xmlrpc 2025-08-18 01:38:45 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2025:13946 https://access.redhat.com/errata/RHSA-2025:13946

Comment 3 errata-xmlrpc 2025-08-18 11:54:47 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2025:14003 https://access.redhat.com/errata/RHSA-2025:14003

Comment 4 errata-xmlrpc 2025-08-18 12:12:07 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2025:14005 https://access.redhat.com/errata/RHSA-2025:14005

Comment 5 errata-xmlrpc 2025-08-27 11:39:47 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2025:14744 https://access.redhat.com/errata/RHSA-2025:14744

Comment 6 errata-xmlrpc 2025-08-27 13:20:00 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2025:14749 https://access.redhat.com/errata/RHSA-2025:14749

Comment 9 errata-xmlrpc 2025-09-29 10:19:05 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2025:16920 https://access.redhat.com/errata/RHSA-2025:16920

Comment 10 errata-xmlrpc 2025-09-29 12:10:04 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2025:16919 https://access.redhat.com/errata/RHSA-2025:16919

Comment 11 errata-xmlrpc 2025-10-07 06:10:40 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2025:17396 https://access.redhat.com/errata/RHSA-2025:17396

Comment 13 errata-xmlrpc 2025-10-20 02:00:26 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:18281 https://access.redhat.com/errata/RHSA-2025:18281

Comment 16 errata-xmlrpc 2025-10-22 00:23:09 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2025:18932 https://access.redhat.com/errata/RHSA-2025:18932